CN215911088U - Teaching aid for demonstrating ionization balance experiment - Google Patents
Teaching aid for demonstrating ionization balance experiment Download PDFInfo
- Publication number
- CN215911088U CN215911088U CN202120480728.4U CN202120480728U CN215911088U CN 215911088 U CN215911088 U CN 215911088U CN 202120480728 U CN202120480728 U CN 202120480728U CN 215911088 U CN215911088 U CN 215911088U
- Authority
- CN
- China
- Prior art keywords
- demonstrating
- electrolyte solution
- impedance
- teaching aid
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000002474 experimental method Methods 0.000 title claims abstract description 35
- 238000012360 testing method Methods 0.000 claims abstract description 93
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 72
- 239000000243 solution Substances 0.000 claims description 40
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 3
- 229910000629 Rh alloy Inorganic materials 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- PXXKQOPKNFECSZ-UHFFFAOYSA-N platinum rhodium Chemical compound [Rh].[Pt] PXXKQOPKNFECSZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000002861 polymer material Substances 0.000 claims description 3
- 239000001103 potassium chloride Substances 0.000 claims description 3
- 235000011164 potassium chloride Nutrition 0.000 claims description 3
- 229910052703 rhodium Inorganic materials 0.000 claims description 3
- 239000010948 rhodium Substances 0.000 claims description 3
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000007772 electrode material Substances 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 41
- 238000000034 method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000004451 qualitative analysis Methods 0.000 abstract 1
- 229940021013 electrolyte solution Drugs 0.000 description 63
- 238000010494 dissociation reaction Methods 0.000 description 35
- 230000005593 dissociations Effects 0.000 description 35
- 150000002500 ions Chemical class 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004832 voltammetry Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model provides a teaching aid for demonstrating ionization balance experiment, this experimental apparatus includes the base, locate electrolyte solution container on the base, temperature control device, the electrode, impedance test sensor, the sensor support, power and wire, through the impedance of impedance test sensor test calculation electrolyte solution, the electrolytic capacity of different electrolytes is different, can calculate the equilibrium constant of different electrolytes, also can pass through the difference of the equilibrium constant of the different electrolytes of the size qualitative analysis directly perceived of current or voltage, this method is favorable to the teacher at the teaching in-process through current, voltage or resistance size direct observation, be convenient for the student in time discover the experiment phenomenon understand, further improve teaching effect.
Description
Technical Field
The utility model relates to a teaching aid, in particular to a teaching aid for demonstrating an ionization balance experiment.
Background
During chemical learning, ionization balance is a chemical concept which is difficult to understand, and it is generally desirable to enhance understanding of the concept through ionization balance experiments. When a weak electrolyte (such as partial weak acid and weak base) with a polar covalent bond (water is also a weak electrolyte) is dissolved in water, the molecules of the weak electrolyte can be weakly ionized to form ions; at the same time, the corresponding ions in solution can also combine into molecules. Generally, from the beginning of the above reaction, the rate of ionization of weak electrolyte molecules out of ions is continuously reduced, and the rate of recombination of ions into weak electrolyte molecules is continuously increased, and when the reaction rates of the two are equal, the solution reaches the ionization equilibrium. At this time, the concentration of electrolyte molecules and the concentration of ions in the solution are in a relatively stable state, respectively, and dynamic equilibrium is achieved.
Experiments were designed to demonstrate that some ionization equilibria are true, and that different compounds possess different equilibrium constants, requiring experiments to be performed to verify.
Some experimental means adopted in the middle of the current teaching materials are original and cannot reflect the digitization of ionization balance, in particular, the method for testing the ionization balance of compounds such as hydrochloric acid, sodium chloride, ammonia water, sodium hydroxide, purified water, acetic acid and the like with the same molar concentration is simple, the electrolytes are connected in series in one electric lamp circuit, and then the brightness of a bulb is observed to judge the ionization balance. The method is simple and extensive, cannot reflect the ionization conditions of different electrolytes, and cannot fully reflect the ionization behavior.
However, the ionization behavior test conditions of the electrolyte are harsh, so that how to effectively demonstrate the series of reactions is very difficult, and particularly, the experiment with simple and safe design and good demonstration is more difficult.
SUMMERY OF THE UTILITY MODEL
The utility model provides a teaching aid for demonstrating electrolyte ionization balance experiments, which mainly aims to overcome the difficulty that the electrolyte equilibrium constant is difficult to determine and demonstrate the experiments and provide an experiment demonstration teaching aid capable of simply and effectively reflecting the electrolyte ionization balance.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a teaching aid for demonstrating ionization balance experiment, this teaching aid includes that a plurality of embeds there is the container of holding cavity, places electrolyte solution in the holding cavity, be used for detecting electrolyte solution's impedance test sensor and one are used for right the power of impedance test sensor power supply, impedance test sensor's sense terminal stretches into below the liquid level of electrolyte solution.
The method is favorable for teachers to directly observe the balance constants of the different electrolytes through the current, the voltage or the resistance in the teaching process, so that students can timely find experimental phenomena to understand, and the teaching effect is further improved.
The impedance test device further comprises an electrode inserted into the electrolyte solution and a lead used for connecting the electrode and the impedance test sensor, wherein one end of the lead is electrically connected with the detection end of the impedance test sensor, the other end of the lead is connected with one end of the electrode, and the other end of the electrode is movably inserted below the liquid level of the electrolyte solution.
Furthermore, the device also comprises a movable sensor bracket for placing the impedance test sensor.
The depth of the electrode immersed in the electrolyte solution can be increased by moving the sensor support, and the test precision is improved.
Furthermore, the device also comprises a temperature control device for controlling the temperature of the electrolyte solution in the container.
Further, the temperature control device is a constant-temperature cup mat, and the container is placed on the constant-temperature cup mat.
Further, the impedance test sensor comprises a direct current meter and a voltmeter.
Further, the electrode is made of graphite or platinum or gold or rhodium or platinum-rhodium alloy, and the shape of the electrode can be a film or a sheet or a circle.
Furthermore, the container is made of glass materials, high polymer materials or stainless steel materials.
Further, the electrolyte solution is acetic acid solution, hydrochloric acid solution, sulfuric acid solution, nitric acid solution, sodium hydroxide solution, potassium hydroxide solution, sodium chloride solution, potassium chloride solution, ammonia water, calcium hydroxide solution, deionized water or distilled water.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model has simple structure and strong practicability, the electrolyte ionization balance is measured by testing the impedance of different electrolyte solutions, the ionization balance can be adjusted by setting the temperatures of the different electrolyte solutions, the magnitude of the balance constant can also be visually and qualitatively observed by the magnitude of the visual current and voltage, the teaching device is beneficial for teachers to explain the concept of the ionization balance through the magnitude of the current and voltage in the teaching process, students can conveniently observe experimental phenomena in real time and understand the concept, and the teaching effect is further improved.
Drawings
FIG. 1 is a schematic diagram of a multi-circuit electrolyte dissociation equilibrium device.
FIG. 2 is a schematic diagram of a single circuit electrolyte dissociation equilibrium device.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
In one embodiment, referring to fig. 1, a teaching aid for demonstrating an ionization balance experiment includes a plurality of containers 8 with built-in accommodating cavities, an electrolyte solution 9 placed in the accommodating cavities, an impedance test sensor 4 for detecting the electrolyte solution 9, a power supply 6 for supplying power to the impedance test sensor 4, electrodes 3 for being inserted into the electrolyte solution 9, leads 7 for connecting the electrodes 3 and the impedance test sensor 4, a sensor support 5 for placing the impedance test sensor 4 to be movable, and a temperature control device for controlling the temperature of the electrolyte solution 9 in the containers 8, wherein a detection end of the impedance test sensor 4 extends below the liquid level of the electrolyte solution 9, and the power supply 6 can be a mobile power supply 6 or a storage battery or a fuel cell.
One end of the lead 7 is electrically connected with the detection end of the impedance test sensor 4, the other end of the lead 7 is connected with one end of the electrode 3, the other end of the electrode 3 can be movably inserted below the liquid level of the electrolyte solution 9, the lead 7 can be a copper lead, the sensor support 5 is arranged, the lead 7 can be hung on the sensor support 5, the length of the lead 7 can be adjusted, and therefore the depth of the electrode 3 inserted into the electrolyte solution 9 can be adjusted, and the sensor support 5 can be an inclined wire arranging frame.
The temperature control device is a constant-temperature cup mat, the container 8 is placed on the constant-temperature cup mat, and the constant-temperature cup mat is used for preserving or heating the electrolyte solution 9 in the container 8.
The impedance test sensor 4 includes a dc current meter and a voltmeter.
The electrode 3 is made of graphite, platinum, gold, rhodium, platinum-rhodium alloy or other conductive materials, and the shape of the electrode 3 can be a film, a sheet or a circle.
The container 8 is made of glass material or high polymer material or stainless steel material, and the container 8 can be a beaker with indication scales commonly used in chemical experiments.
The electrolyte solution 9 is acetic acid solution, hydrochloric acid solution, sulfuric acid solution, nitric acid solution, sodium hydroxide solution, potassium hydroxide solution, sodium chloride solution, potassium chloride solution, ammonia water, calcium hydroxide solution, deionized water, distilled water or other ionizable liquid compounds.
The second embodiment is different from the first embodiment in that: referring to fig. 1, the teaching aid for demonstrating ionization balance experiment comprises a base 1, a container 8 containing electrolyte solution 9, a temperature control device 2, an electrode 3, an impedance test sensor 4, a sensor support 5, a power supply 6, a lead 7 and the like. In the experimental apparatus, the electrodes 3 are disposed in the electrolyte solution 9, and the impedance of the electrolyte solution 9 can be tested after the impedance testing circuit is connected to the electrodes 3, so that in this embodiment, a complete testing circuit is formed in each electrolyte solution 9. And after the impedance is tested, the dissociation equilibrium constants of the solution are respectively calculated by utilizing an electrolyte dissociation formula, so that different electrolytes with different dissociation constants are obtained. The impedance test circuit is a voltammetry method, that is, an ammeter voltmeter is used for testing, and other structures are similar to those of the first embodiment and are not described herein again.
The third embodiment is different from the first embodiment in that: referring to fig. 2, the teaching aid for demonstrating ionization balance experiment comprises a base 1, a container 8 containing electrolyte solution 9, a temperature control device 2, an electrode 3, an impedance test sensor 4, a sensor support 5, a power supply 6, a lead 7 and the like. The electrode 3 is arranged in the electrolyte solution 9 in the experimental device, and the impedance of the electrolyte solution 9 can be tested after the impedance testing circuit is connected with the electrode 3. In this embodiment only one electrolyte solution 9 in a container 8 forms a complete test circuit, and each electrode 3 is connected to the test circuit separately to test the impedance of each solution. And after the impedance is tested, the dissociation equilibrium constants of the solution are respectively calculated by utilizing an electrolyte dissociation formula, so that different electrolytes with different dissociation constants are obtained. The impedance test circuit is a voltammetry method, that is, an ammeter voltmeter is used for testing, and other structures are similar to those of the first embodiment and are not described herein again.
The fourth embodiment is different from the first embodiment in that: referring to fig. 1, the teaching aid for demonstrating ionization balance experiment comprises a base 1, a container 8 containing electrolyte solution 9, a temperature control device 2, an electrode 3, an impedance test sensor 4, a sensor support 5, a power supply 6, a lead 7 and the like. The electrode 3 is arranged in the electrolyte solution 9 in the experimental device, and the impedance of the electrolyte solution 9 can be tested after the impedance testing circuit is connected with the electrode 3. In this embodiment a complete test circuit is formed within each electrolyte solution 9. And after the impedance is tested, the dissociation equilibrium constants of the solution are respectively calculated by utilizing an electrolyte dissociation formula, so that different electrolytes with different dissociation constants are obtained. The impedance test circuit is a Wheatstone bridge test circuit, and other structures are similar to those of the first embodiment and are not described herein again.
Fifth embodiment, the difference between the fifth embodiment and the first embodiment is: referring to fig. 2, the teaching aid for demonstrating ionization balance experiment comprises a base 1, a container 8 containing electrolyte solution 9, a temperature control device 2, an electrode 3, an impedance test sensor 4, a sensor support 5, a power supply 6, a lead 7 and the like. The electrode 3 is arranged in the electrolyte solution 9 in the experimental device, and the impedance of the electrolyte solution 9 can be tested after the impedance testing circuit is connected with the electrode 3. In this embodiment only one electrolyte solution 9 in a container 8 forms a complete test circuit, and each electrode 3 is connected to the test circuit separately to test the impedance of each solution. And after the impedance is tested, the dissociation equilibrium constants of the solution are respectively calculated by utilizing an electrolyte dissociation formula, so that different electrolytes with different dissociation constants are obtained. The impedance test circuit is a Wheatstone bridge test circuit, and other structures are similar to those of the first embodiment and are not described herein again.
Sixth embodiment, the difference between the sixth embodiment and the first embodiment is: referring to fig. 1, the teaching aid for demonstrating ionization balance experiment comprises a base 1, a container 8 containing electrolyte solution 9, a temperature control device 2, an electrode 3, an impedance test sensor 4, a sensor support 5, a power supply 6, a lead 7 and the like. The electrode 3 is arranged in the electrolyte solution 9 in the experimental device, and the impedance of the electrolyte solution 9 can be tested after the impedance testing circuit is connected with the electrode 3. In this embodiment a complete test circuit is formed within each electrolyte solution 9. And after the impedance is tested, the dissociation equilibrium constants of the solution are respectively calculated by utilizing an electrolyte dissociation formula, so that different electrolytes with different dissociation constants are obtained. The impedance test circuit is an automatic impedance bridge test circuit, and other structures are similar to those of the first embodiment and are not described herein again.
The seventh embodiment is different from the first embodiment in that: referring to fig. 2, the teaching aid for demonstrating ionization balance experiment comprises a base 1, a container 8 containing electrolyte solution 9, a temperature control device 2, an electrode 3, an impedance test sensor 4, a sensor support 5, a power supply 6, a lead 7 and the like. The electrode 3 is arranged in the electrolyte solution 9 in the experimental device, and the impedance of the electrolyte solution 9 can be tested after the impedance testing circuit is connected with the electrode 3. In this embodiment only one electrolyte solution 9 in a container 8 forms a complete test circuit, and each electrode 3 is connected to the test circuit separately to test the impedance of each solution. And after the impedance is tested, the dissociation equilibrium constants of the solution are respectively calculated by utilizing an electrolyte dissociation formula, so that different electrolytes with different dissociation constants are obtained. The impedance test circuit is an automatic impedance bridge test circuit, and other structures are similar to those of the first embodiment and are not described herein again.
The eighth embodiment is different from the first embodiment in that: referring to fig. 2, a teaching aid for demonstrating ionization balance experiment, as shown in fig. 1, comprises a base 1, a container 8 containing electrolyte solution 9, a temperature control device 2, an electrode 3, an impedance test sensor 4, a sensor support 5, a power supply 6, a lead 7 and the like. The electrode 3 is arranged in the electrolyte solution 9 in the experimental device, and the impedance of the electrolyte solution 9 can be tested after the impedance testing circuit is connected with the electrode 3. In this embodiment a complete test circuit is formed within each electrolyte solution 9. And after the impedance is tested, the dissociation equilibrium constants of the solution are respectively calculated by utilizing an electrolyte dissociation formula, so that different electrolytes with different dissociation constants are obtained. The impedance test circuit is a differential bridge test circuit, and other structures are similar to those of the first embodiment and are not described herein again.
Ninth embodiment, the ninth embodiment is different from the first embodiment in that: referring to fig. 2, the teaching aid for demonstrating ionization balance experiment comprises a base 1, a container 8 containing electrolyte solution 9, a temperature control device 2, an electrode 3, an impedance test sensor 4, a sensor support 5, a power supply 6, a lead 7 and the like. The electrode 3 is arranged in the electrolyte solution 9 in the experimental device, and the impedance of the electrolyte solution 9 can be tested after the impedance testing circuit is connected with the electrode 3. In this embodiment only one electrolyte solution 9 in a container 8 forms a complete test circuit, and each electrode 3 is connected to the test circuit separately to test the impedance of each solution. And after the impedance is tested, the dissociation equilibrium constants of the solution are respectively calculated by utilizing an electrolyte dissociation formula, so that different electrolytes with different dissociation constants are obtained. The impedance test circuit is a differential bridge test circuit, and other structures are similar to those of the first embodiment and are not described herein again.
Tenth embodiment, the tenth embodiment is different from the first embodiment in that: referring to fig. 1, the teaching aid for demonstrating ionization balance experiment comprises a base 1, a container 8 containing electrolyte solution 9, a temperature control device 2, an electrode 3, an impedance test sensor 4, a sensor support 5, a power supply 6, a lead 7 and the like. The electrode 3 is arranged in the electrolyte solution 9 in the experimental device, and the impedance of the electrolyte solution 9 can be tested after the impedance testing circuit is connected with the electrode 3. In this embodiment a complete test circuit is formed within each electrolyte solution 9. And after the impedance is tested, the dissociation equilibrium constants of the solution are respectively calculated by utilizing an electrolyte dissociation formula, so that different electrolytes with different dissociation constants are obtained. The impedance test circuit is tested by using a vector impedance table, and other structures are similar to those of the first embodiment and are not described herein again.
Tenth embodiment, the tenth embodiment is different from the first embodiment in that: referring to fig. 2, a teaching aid for demonstrating ionization balance experiment comprises a base 1, a container 8 containing electrolyte solution 9, a temperature control device 2, an electrode 3, an impedance test sensor 4, a sensor support 5, a power supply 6, a lead 7 and the like. The electrode 3 is arranged in the electrolyte solution 9 in the experimental device, and the impedance of the electrolyte solution 9 can be tested after the impedance testing circuit is connected with the electrode 3. In this embodiment a complete test circuit is formed within each electrolyte solution 9. And after the impedance is tested, the dissociation equilibrium constants of the solution are respectively calculated by utilizing an electrolyte dissociation formula, so that different electrolytes with different dissociation constants are obtained. The impedance test circuit is tested by using a vector impedance table, and other structures are similar to those of the first embodiment and are not described herein again.
The eleventh embodiment is different from the first embodiment in that: referring to fig. 2, the teaching aid for demonstrating ionization balance experiment comprises a base 1, a container 8 containing electrolyte solution 9, a temperature control device 2, an electrode 3, an impedance test sensor 4, a sensor support 5, a power supply 6, a lead 7 and the like. The electrode 3 is arranged in the electrolyte solution 9 in the experimental device, and the impedance of the electrolyte solution 9 can be tested after the impedance testing circuit is connected with the electrode 3. In this embodiment only one electrolyte solution 9 in a container 8 forms a complete test circuit, and each electrode 3 is connected to the test circuit separately to test the impedance of each solution. And after the impedance is tested, the dissociation equilibrium constants of the solution are respectively calculated by utilizing an electrolyte dissociation formula, so that different electrolytes with different dissociation constants are obtained. The impedance test circuit is tested by using a vector impedance table, and other structures are similar to those of the first embodiment and are not described herein again.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (9)
1. A teaching aid for demonstrating ionization balance experiment which characterized in that: the teaching aid comprises a plurality of containers with built-in containing cavities, electrolyte solution placed in the containing cavities, impedance test sensors used for detecting the electrolyte solution and a power supply used for supplying power to the impedance test sensors, wherein the detection ends of the impedance test sensors stretch into the liquid level below the electrolyte solution.
2. A teaching aid for demonstrating ionization balance experiments as claimed in claim 1, wherein: the impedance test device is characterized by further comprising an electrode inserted into the electrolyte solution and a lead used for connecting the electrode and the impedance test sensor, wherein one end of the lead is electrically connected with the detection end of the impedance test sensor, the other end of the lead is connected with one end of the electrode, and the other end of the electrode is movably inserted below the liquid level of the electrolyte solution.
3. A teaching aid for demonstrating ionization balance experiments as claimed in claim 2, wherein: the impedance test device also comprises a sensor bracket used for placing the impedance test sensor to be movable.
4. A teaching aid for demonstrating ionization balance experiments as claimed in claim 1, wherein: also comprises a temperature control device for controlling the temperature of the electrolyte solution in the container.
5. A teaching aid for demonstrating ionization balance experiments, as claimed in claim 4, wherein: the temperature control device is a constant-temperature cup mat, and the container is placed on the constant-temperature cup mat.
6. A teaching aid for demonstrating ionization balance experiments as claimed in claim 1, wherein: the impedance test sensor includes a direct current meter and a voltmeter.
7. A teaching aid for demonstrating ionization balance experiments as claimed in claim 1, wherein: the electrode material is graphite or platinum or gold or rhodium or platinum-rhodium alloy, and the shape of the electrode can be a film or a sheet or a circle.
8. A teaching aid for demonstrating ionization balance experiments as claimed in claim 1, wherein: the container is made of glass materials, high polymer materials or stainless steel materials.
9. A teaching aid for demonstrating ionization balance experiments as claimed in claim 1, wherein: the electrolyte solution is acetic acid solution, hydrochloric acid solution, sulfuric acid solution, nitric acid solution, sodium hydroxide solution, potassium hydroxide solution, sodium chloride solution, potassium chloride solution, ammonia water, calcium hydroxide solution, deionized water or distilled water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120480728.4U CN215911088U (en) | 2021-03-05 | 2021-03-05 | Teaching aid for demonstrating ionization balance experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120480728.4U CN215911088U (en) | 2021-03-05 | 2021-03-05 | Teaching aid for demonstrating ionization balance experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215911088U true CN215911088U (en) | 2022-02-25 |
Family
ID=80285858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120480728.4U Expired - Fee Related CN215911088U (en) | 2021-03-05 | 2021-03-05 | Teaching aid for demonstrating ionization balance experiment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215911088U (en) |
-
2021
- 2021-03-05 CN CN202120480728.4U patent/CN215911088U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Holze | Experimental electrochemistry: a laboratory textbook | |
| CN103424313B (en) | In-situ tensile and hydrogen content monitoring device, and method for monitoring content of hydrogen by using same | |
| NZ192090A (en) | Measuring a chemical characteristic of a liquid with immersed electrodes ph meter | |
| CN207067252U (en) | A kind of device that electrical conductivity of solution is surveyed based on four electrode method | |
| CN103630480A (en) | Corrosion testing device for metal inside gaps under stripped coatings | |
| CN215911088U (en) | Teaching aid for demonstrating ionization balance experiment | |
| CN217505983U (en) | High-precision solution conductivity measuring instrument | |
| CN104617347B (en) | Short circuit current, device and application method are surveyed before a kind of rectangular lithium battery liquid filling | |
| CN103822955A (en) | Titrating device of potentiometric titrator | |
| CN206848141U (en) | A kind of electrochemical corrosion test device | |
| Ershler et al. | Surface chemistry of the platinum electrode | |
| CN2154519Y (en) | Detector for electrochemistry micro-current | |
| CN204807499U (en) | Acidimeter is used in teaching | |
| CN104034650A (en) | Low voltage anode foil corrosion resistance test method and testing device for aluminium eletrolytic capacitor | |
| CN209606369U (en) | It is a kind of for detecting the device of electrolyte electrochemical performance | |
| Sevilla III et al. | The electrician's multimeter in the chemistry teaching laboratory: Part 2: Potentiometry and conductimetry | |
| CN206322403U (en) | A kind of Electrolytic Water Experiment instrument | |
| CN115116311A (en) | Cu determination based on Schiff method 2+ Experimental device for ion transference number | |
| CN207264639U (en) | A kind of device using primary battery demonstration movable metallic | |
| CN210742431U (en) | Self-stabilizing and pole-spacing-adjustable plate-to-plate breakdown device for laser ranging | |
| CN207924973U (en) | A kind of device for demonstrating movable metallic using primary battery | |
| CN218938191U (en) | Electrolysis device for detecting pure copper and copper alloy | |
| CN217034100U (en) | Device for measuring resistance of conductive fiber wire by four-terminal method | |
| CN220854553U (en) | Indoor experimental device for measuring suspended particle concentration of water body based on electrical characteristics | |
| CN220232614U (en) | Ion reaction demonstrator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |