CN206848201U - Measuring device for ideal gas constant - Google Patents
Measuring device for ideal gas constant Download PDFInfo
- Publication number
- CN206848201U CN206848201U CN201720724527.8U CN201720724527U CN206848201U CN 206848201 U CN206848201 U CN 206848201U CN 201720724527 U CN201720724527 U CN 201720724527U CN 206848201 U CN206848201 U CN 206848201U
- Authority
- CN
- China
- Prior art keywords
- gas constant
- ideal gas
- temperature
- necked bottle
- conduit
- 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
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims description 8
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 abstract description 22
- 239000011630 iodine Substances 0.000 abstract description 22
- 229910052740 iodine Inorganic materials 0.000 abstract description 22
- 239000000126 substance Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 29
- 238000002474 experimental method Methods 0.000 description 8
- 239000007787 solid Substances 0.000 description 3
- 241001411320 Eriogonum inflatum Species 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001256 steam distillation Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model belongs to chemistry subject teaching practice field specifically is a survey device that relates to an ideal gas constant. In the device structure, a three-neck bottle is arranged on an iron stand through an iron clamp, and a bottle body of the three-neck bottle is placed in a water bath; the temperature sensor, the pressure sensor and the conduit are respectively arranged on three branch pipes of the three-neck bottle and are sealed by plugs, and the tail end of the conduit extends into a beaker filled with sodium hydroxide solution. The ideal gas constant is calculated according to the formula R PV/nT PVM/mT, wherein V, M is a fixed value and m is calculated from a difference value or P and T are obtained by a temperature sensor and a pressure sensor. The utility model discloses use temperature sensor, pressure sensor, survey out dynamic pressure and the temperature variation curve after iodine simple substance sublimes completely in the three-necked bottle, combine relevant algorithm, can demonstrate the ideal gas constant directly perceivedly to can obviously see out this characteristics that the ideal gas constant does not receive temperature, pressure influence.
Description
Technical field
The utility model belongs to chemistry subject teaching practice field, is specifically related to a kind of measure dress of ideal gas constant
Put.
Background technology
In the teaching practice of traditional chemical subject, for the measure of ideal gas constant, according to formula R=PV/nT, utilize
Equation Mg+H2SO4=MgSO4+H2↑, the amount n, P of the material that the Mass Calculation for weighing Mg goes out hydrogen are atmospheric pressure, and temperature is normal
Under temperature.
The experimental method can determine ideal gas constant roughly, but remain in following three problems：
1., experiment in vapor can cause certain error；
2., magnesium rod is impure or surface is oxidized and can bring certain error；
3., the experiment can not intuitively show the characteristics of ideal gas constant is not influenceed by temperature, pressure.
Utility model content
Determine to solve conventional measurement ideal gas constant method exist larger, not easy to operate, poor intuition of error etc. lack
Point.The utility model provides a kind of measure device of ideal gas constant, both can intuitively show ideal gas constant,
Again it is apparent that this feature that ideal gas constant is not influenceed by temperature, pressure.
To solve technical problem of the present utility model, used technical scheme is：A kind of measure of ideal gas constant
Device, including three-necked bottle, iron stand, water bath, alcolhol burner, temperature sensor, pressure sensor, conduit and beaker, three-necked bottle
It is arranged on by iron clamp on iron stand, three-necked bottle body is placed in water bath, and water is controlled by alcolhol burner in the lower section of water bath
Bathe the temperature of trough inner water；Temperature sensor, pressure sensor and conduit are separately mounted on three branch pipes of three-necked bottle and passed through
Plug seal, the end of conduit are stretched into the beaker for filling sodium hydroxide solution, and conduit is provided with tongs.
It is as follows using the method for said apparatus measure ideal gas constant, step：
1., pressure sensor and temperature sensor are inserted in three-necked bottle, conduit, which is inserted into, fills sodium hydroxide solution
In beaker；
2., weigh three-necked bottle quality, open bottle stopper, add a small amount of elemental iodine thereto, put water bath and alcolhol burner well；
3., open tongs, three-necked bottle is integrally submerged in water bath, being heated to three-necked bottle bottom does not have elemental iodine solid
Untill, tongs is closed, removes temperature sensor, the number of pressure sensor in alcolhol burner and start recording following a period of time
Value；
4., treat that three-necked bottle is cooled to room temperature, claim the quality of now three-necked bottle, quality difference value is now to contain in three-necked bottle twice
There is the quality of elemental iodine；
5., according to formula R=PV/nT=PVM/mT calculate ideal gas constant, in formula, V is three-necked bottle volume, is
Quality difference value, M are elemental iodine molal weight to m three-necked bottles twice, and pressure P and temperature T numerical value pass through temperature sensor, pressure sensing
Device obtains.
The another of measure device as ideal gas constant of the present utility model improves, and device also includes collecting temperature
The data acquisition unit of sensor, pressure sensor data, data acquisition unit transmit the temperature collected, pressure data to processing
In equipment, ideal gas constant numerical value is calculated and displayed in processing equipment.
The another of assay method as ideal gas constant of the present utility model improves, and step is as follows：
1., pressure sensor and temperature sensor are inserted in three-necked bottle, conduit, which is inserted into, fills sodium hydroxide solution
In beaker, computer is selected to open the Vinnie that software installed in computer as processing equipment；
2., weigh three-necked bottle quality, open bottle stopper, add a small amount of elemental iodine thereto, put water bath and alcolhol burner well；
3., open tongs, three-necked bottle is integrally submerged in water bath, being heated to three-necked bottle bottom does not have elemental iodine solid
Untill, tongs is closed, clicks on " collection " button on your software of Vinnie, alcolhol burner is removed, clicks on and " stop after collection a period of time
Only gather " button；
4., treat that three-necked bottle is cooled to room temperature, claim the quality of now three-necked bottle, quality difference value is now to contain in three-necked bottle twice
There is the quality of elemental iodine；
5., three-necked bottle volume (V), three-necked bottle quality difference value (m), elemental iodine molal weight twice are inputted into software interface
(M), software combines the pressure (P) and temperature (T) numerical value of collection, and perfect gas is calculated according to formula R=PV/nT=PVM/mT
Constant.
The utility model is relative to the beneficial effect of prior art：
The utility model temperature in use sensor, pressure sensor, determine in three-necked bottle after elemental iodine distillation completely
Dynamic pressure and temperature variation curve, with reference to related algorithm, can intuitively show ideal gas constant, and can be significantly
Find out this feature that ideal gas constant is not influenceed by temperature, pressure.
Brief description of the drawings
The utility model is made with accompanying drawing with reference to embodiments and being discussed further.
Fig. 1 is the structural representation of the measure device of ideal gas constant of the present utility model.
Fig. 2 is temperature and air pressure change curve.
Fig. 3 is the ideal gas constant experimental data measured.
Embodiment
The utility model is mainly with digital experiment measure ideal gas constant：
1., experimental provision
The assay device structures of ideal gas constant as shown in figure 1, three-necked bottle 5 is arranged on iron stand 7 by iron clamp 12,
The body of three-necked bottle 5 is placed in water bath 4, controls the temperature of water-bath trough inner water by alcolhol burner 6 in the lower section of water bath 4.
Three branch pipes difference mounting temperature sensor 11, pressure sensor 10 and the conduit 2 of three-necked bottle 5, and pass through plug
Sealing.The end of conduit 2 is stretched into the beaker 1 for filling sodium hydroxide solution, and by closing the tongs being clamped on conduit 2
System in 3 temporary transient closed three-necked bottles, and avoid liquid from flowing back.
By the temperature and pressure data transfer of collection into processing equipment 9, processing equipment 9 is calculated and shown data acquisition unit 8
Ideal gas constant numerical value is shown.In order to more intuitively show measure curve and numerical value, by supporting soft equipped with Vinnie that
Related data (m, V, M numerical value), and collecting temperature and pressure value in real time are inputted on the computer of part, so as to construct perfect gas
The function curve of constant.
2., experimental principle it is as follows：
PV=nRT
R=PV/nT=PVM/mT
P can be measured directly with pressure sensor；
V can measure container (three-necked bottle) volume with drainage；
T can be measured directly with temperature sensor；
M uses the quality of poor quality for measuring elemental iodine in three-necked bottle.
Elemental iodine distils obvious at 45 DEG C, and the utility model is put into excessive elemental iodine in three-necked bottle, and
Three-necked bottle is fully immersed in the hot bath in water bath (water temperature is at 90 DEG C or so), three necks to the greatest extent are caught up with using the distillation of elemental iodine
Air in bottle, the air and iodine steam of discharge are passed through in sodium hydroxide solution.Treat that elemental iodine distils completely in device, closing stops
Water presss from both sides, and determines in a period of time temperature and air pressure change curve in device, reuse means is of poor quality to be calculated now in device
Elemental iodine content, input related data (m, V, M number in supporting processing equipment (such as the computer equipped with your software kit of Vinnie)
Value), so as to construct the function curve of ideal gas constant.
3., experimental method step：
1st, connection as shown in Figure 1, inserts pressure sensor in three-necked bottle and temperature sensor, conduit is inserted into 1mol/L
In sodium hydroxide solution, open the Vinnie that software in computer (R values are calculated based on R=PV/nT=PVM/mT).
2nd, weigh three-necked bottle (specification 251mL) quality (containing plug and it is inadvisable under line) be 352.602g.Beat
Corkage plug, adds about 10g elemental iodine, connects each part as shown in Figure 1 thereto.
3rd, tongs is opened, three-necked bottle is integrally submerged in water bath (about 90 DEG C of temperature), is heated to three-necked bottle bottom and does not have
Untill having elemental iodine solid, tongs is closed, clicks on " collection " button on software, removes alcolhol burner, gathers about 3min.Click on
" stopping collection " button.
4th, treat that three-necked bottle is cooled to room temperature, now three-necked bottle quality (containing plug and it is inadvisable under line) be referred to as
354.792g, i.e., now the quality containing elemental iodine is 2.190g in three-necked bottle.
5th, " newly calculating column " in software " data " column is clicked on, " volume=0.251L ", " quality are inputted in " parameter " column
=2.190g ", " elemental iodine molal weight=254.000g/mol "." (elemental iodine molal weight * bodies are inputted in " formula " column
Product * " pressure ")/(" temperature " * mass) ", choose " being shown in real time readouts ", click on " completion ".
4., experimental data and conclusion
Fig. 2 is temperature and air pressure change curve, and Fig. 3 is the ideal gas constant experimental data measured.Can from Fig. 2 and 3
To find out, ideal gas constant is not changed simultaneously by temperature and pressure to be influenceed, and it is about 8.30kPaL to measure data
mol-1·K-1, the degree of accuracy is up to 99.83%.
5., experiment innovative point
For traditional experiment when carrying out ideal gas constant measure, it is big error to be present, and can not intuitively show preferable gas
The characteristics of body constant is not influenceed by temperature, pressure.This experiment is efficiently reduced using the air in iodine steam distillation discharger
Error.Secondly, this experimental implementation is simple, after determining temperature and pressure data, is directly set in your software of Vinnie
Related preset parameter can obtain a result, simple and clear.
Above content is only to design example of the present utility model and explanation, the technology of affiliated the art
Personnel are made various modifications or supplement to described specific embodiment or substituted using similar mode, without departing from
The design of utility model surmounts scope defined in the claims, all should belong to the scope of protection of the utility model.
Claims (2)
1. the measure device of a kind of ideal gas constant, it is characterised in that including three-necked bottle (5), iron stand (7), water bath
(4), alcolhol burner (6), temperature sensor (11), pressure sensor (10), conduit (2) and beaker (1), three-necked bottle (5) pass through iron
Press from both sides (12) to be arranged on iron stand (7), three-necked bottle (5) body is placed in water bath (4), passes through wine below water bath (4)
The temperature of smart lamp (6) control water-bath trough inner water；Temperature sensor (11), pressure sensor (10) and conduit (2) are separately mounted to
The beaker for filling sodium hydroxide solution is stretched on three branch pipes of three-necked bottle (5) and by plug seal, the end of conduit (2)
(1) in, conduit (2) is provided with tongs (3).
2. the measure device of ideal gas constant as claimed in claim 1, it is characterised in that also including collecting temperature sensor
(11), the data acquisition unit (8) of pressure sensor (10) data, data acquisition unit (8) pass the temperature collected, pressure data
Transport in processing equipment (9), ideal gas constant numerical value is calculated and displayed in processing equipment (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720724527.8U CN206848201U (en) | 2017-06-21 | 2017-06-21 | Measuring device for ideal gas constant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720724527.8U CN206848201U (en) | 2017-06-21 | 2017-06-21 | Measuring device for ideal gas constant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206848201U true CN206848201U (en) | 2018-01-05 |
Family
ID=60801052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720724527.8U Expired - Fee Related CN206848201U (en) | 2017-06-21 | 2017-06-21 | Measuring device for ideal gas constant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206848201U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107121449A (en) * | 2017-06-21 | 2017-09-01 | 合肥学院 | Device and method for measuring ideal gas constant |
-
2017
- 2017-06-21 CN CN201720724527.8U patent/CN206848201U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107121449A (en) * | 2017-06-21 | 2017-09-01 | 合肥学院 | Device and method for measuring ideal gas constant |
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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: 20180105 Termination date: 20190621 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |