CN107346632A - A kind of sodium and water reaction quantitative experiment device - Google Patents
A kind of sodium and water reaction quantitative experiment device Download PDFInfo
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- CN107346632A CN107346632A CN201610290438.7A CN201610290438A CN107346632A CN 107346632 A CN107346632 A CN 107346632A CN 201610290438 A CN201610290438 A CN 201610290438A CN 107346632 A CN107346632 A CN 107346632A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/24—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for chemistry
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Abstract
The present invention relates to a kind of middle school chemical experiment instrument, specifically a kind of sodium and water reaction quantitative experiment device, including sodium pipe, plug, response measurement pipe, instruction pipe, connecting tube, conduit, switch, controller, knockout, support；Sodium pipe quantitatively takes metallic sodium；Response measurement pipe is connected with instruction pipe by connecting tube, and water and indicator solution are held in response measurement pipe, and the plug with sodium pipe and conduit stoppers the mouth of pipe of response measurement pipe, releases the metallic sodium in sodium pipe, sodium and water reaction；In response measurement pipe, indicator solution is pressed into instruction pipe the Hydrogen collection of generation, shows gas volume；After reaction terminates, suitable quantity of water is added in pipe is indicated, controller is opened, hydrogen is discharged, lighted, examines hydrogen.This technology, which is invented, realizes the quantitative experiment of sodium and water, has simple to operate, securely and reliably, saves medicine, green, the advantages of stable performance, facilitates experimental teaching, suitable student's independent experiment operation, carries out Experimental Research activity.
Description
Technical field
The present invention relates to a kind of middle school chemical experiment instrument, specifically a kind of sodium and water reaction quantitative experiment device.
Background technology
Metallic sodium is a kind of active metal, is easily reacted.The reaction of sodium and water is the important chemical property of one item, is one Classic Experiments of middle school chemistry, and a difficult point experiment.It is that metallic sodium is directly placed into water in teaching material, is tested in open-top receptacle, although the phenomenon of reaction can be observed directly, easily causes the complicated side reaction such as burning of sodium, the splashing of liquid or sodium occurs, causes certain danger；In addition, sodium block moves about everywhere, it is not easy to which the gas for collecting reaction generation carries out the inspection of product.Chinese patent 201520649221.1,201520611479.2,201520352785.9,201520289681.8,201420219783.8 etc. is improved above-mentioned experiment from different perspectives respectively, devise the different semi-hermetic experimental provision of structure, it can make sodium under conditions of air is completely cut off and water reacts, and the gas that can directly collect generation is tested.Chinese patent 201520025026.1 is provided with metallic sodium propeller, simplifies the experimental implementation taken of sodium, but still can not accurately determine the amount of metallic sodium.Tested under conditions of the amount of sodium does not determine, be unable to estimate the volume of generation hydrogen, the water in device may be overflowed, and unnecessary trouble is caused to experiment.In said apparatus, in order to determine the volume of generation gas, it is necessary to substantial amounts of water；Actually seldom with the water of metallic sodium reaction in this experiment, the amount of water is significantly excessive, causes to waste.In a word, above difficulties are not resolved, it is still desirable to are further improved, made a certain amount of metallic sodium in the case where completely cutting off air conditionses and suitable quantity of water is reacted, while determine the volume and chemical reaction rate of generation gas.
The content of the invention
The purpose of this technology invention is to provide a kind of simple to operate, securely and reliably, save medicine, it is green, the sodium of stable performance and water reaction quantitative experiment device, a certain amount of metallic sodium can be made in the case where completely cutting off air conditionses and suitable quantity of water is reacted, while determine the volume and chemical reaction rate of generation gas.
To achieve the above object, technical solution of the invention is as follows：
The present invention relates to a kind of middle school chemical experiment instrument, specifically a kind of sodium and water reaction quantitative experiment device, including sodium pipe, plug, response measurement pipe, instruction pipe, connecting tube, conduit, switch, controller, knockout, support.
Foregoing sodium pipe, including piston and graded tube, graded tube are provided with graduation mark and closure, and wall is thin, transparent, can be used for quantitative fetching metallic sodium exactly.
Foregoing response measurement pipe, is provided with graduation mark and conduit, is connected by connecting tube with instruction pipe, holds water and indicator solution, reacted for the sodium in the case where completely cutting off air conditionses and water, collected the gas of reaction generation and measure its volume.
Foregoing instruction pipe, is provided with graduation mark and conduit, is connected by connecting tube with response measurement pipe, and after reaction starts, the indicator solution in response measurement pipe is pressed into instruction pipe, for collecting indicator solution, the volume of measurement generation hydrogen.
Foregoing connecting tube, switch and knockout are provided with, are managed for coupled reaction measurement pipe and instruction, after experiment terminates, remaining waste liquid and indicator solution are separated by knockout in device.
Foregoing support, including bottom plate, pole and clip, for fixing the laboratory apparatus such as response measurement pipe, instruction pipe.
During experiment, the air-tightness of check device, assembly and connection retainer instrument as shown in the figure.A certain amount of metallic sodium is taken in sodium pipe, is inserted into the hole set on plug, the conduit of tape controller is inserted in another hole on plug.Appropriate indicator solution is added in response measurement pipe, when managing minimum graduation mark to instruction, close the switch of connecting tube, continue to add indicator solution and a small amount of water (indicator solution and water is immiscible and water density is smaller in response measurement pipe, indicator solution is in lower floor), the water surface is reached zero graduation mark position, the mouth of pipe of response measurement pipe is stoppered with the plug with sodium pipe and conduit, plug lower end just reaches liquid level position, excludes air.The switch set in connecting tube is opened, releases the metallic sodium in sodium pipe, sodium starts in complete closed environment and water reaction, liquid level decline；The hydrogen of generation is directly collected in response measurement pipe, and indicator solution is pressed into instruction pipe, shows hydrogen volume.After reaction terminates, catheter controller is opened, hydrogen is discharged, lighted, examine hydrogen.Experiment terminates, and opens plug, instills phenolphthalein solution, and solution becomes red.The knockout that connecting tube lower end is set is opened, releases indicator solution.Appropriate watery hydrochloric acid is added in remaining waste liquid to neutralize, and is taken off to colourless and is discharged in after neutral.
During experiment, video shooting, experimentation is recorded.During experiment video is played, record hydrogen volume changes with time, and determines chemical reaction rate.
This technology invention more fully solves the problem of sodium and water experimental teaching, realizes above subject invention., can quantitative fetching metallic sodium, and sodium can be made, with suitable quantity of water reaction, to have prevented the generation of side reaction under conditions of isolation air completely exactly using the experimental provision；Hydrogen can directly be collected and measure its volume, changed with time by determining its volume, moreover it is possible to determine sodium and the chemical reaction rate of water reaction；In this experiment, it is only necessary to minimal amount of water, substantially reduce the number the dosage of water, indicator solution can be utilized with iterative cycles, reduce liquid waste processing difficulty.With simple to operate, securely and reliably, medicine is saved, it is green, the advantages of stable performance, suitable for sodium and water reacts and principle is similar multiple Experimental Researchs activity, experimental teaching is facilitated, suitable student's independent experiment operates.
Brief description of the drawings
Fig. 1 is the structure of a kind of sodium of the present invention and water reaction quantitative experiment device.
Embodiment
Technical scheme is described in detail for explanation and specific embodiment below in conjunction with the accompanying drawings.
1. quantitative fetching metallic sodium
Hand-held sodium pipe 1, vertically downward, exerted oneself downwards in rotation against sodium block, sodium is entered in sodium pipe 1, read the volume of sodium 3, cover tightly closure 4.Sodium pipe 1 containing metallic sodium 3 is inserted into a hole of plug 14.
2. check device air-tightness
As shown in figure 1, being connected response measurement pipe 6 and instruction pipe 7 with connecting tube 12, it is fixed on support 13, opens switch 8, close knockout 11, add appropriate indicator solution 5, liquid level is reached minimum zero graduation mark position of instruction pipe 7.Closing switch 8, continue to add under indicator solution 5 to the graduation mark of highest zero mouth of pipe for a little, then stoppering response measurement pipe 6 with the plug 14 with sodium pipe 1 and conduit 9 in response measurement pipe 6.Switch 8 is opened, a moment later, the liquid level in response measurement pipe 6 does not decline, and illustrates that device is air tight.
3. sodium reacts with water
Remove plug 14, (the indicator solution and water is immiscible and water density is smaller of suitable quantity of water 15 is added in response measurement pipe 6, water layer is upper), liquid level is set to reach the graduation mark position of highest zero of response measurement pipe 6, plug 14 is stoppered in the mouth of pipe of response measurement pipe 6, bubble is not left between plug lower end and liquid level.
Start recording apparatus, promote piston 2, extrude sodium 3.Sodium reacts immediately with water, and in response measurement pipe 6, liquid level declines the gas collection of generation, and indicator solution 5 is gradually pressed into instruction pipe 7, and response measurement pipe 6 can show the volume of hydrogen with instruction pipe 7.After reaction stops, the volume of generation hydrogen is read.
4. the inspection of reaction product
The controller 10 on conduit 9 is opened, indicator solution discharges gas, lights, and produces blue flame.In one dry and cold beaker of flame upper cover, there is the globule in beaker inwall, it was demonstrated that the gas that sodium generates with water reaction is hydrogen.Plug 14 is removed, instills phenolphthalein solution, becomes red, illustrates to generate sodium hydroxide.
5. dispose waste liquid
Experiment terminates, and opens knockout 11, all outflows of indicator solution 5 of lower floor, repeated recycling utilize after recovery.Added in the waste liquid of upper strata in appropriate watery hydrochloric acid and, take off to discharging after colourless.
6. data processing
Experiment video recording is played, according to experimental period and hydrogen volume numerical value, calculates chemical reaction rate.
It is described above, any formal limitation not is done to the present invention, any person skilled in the art is changed or is modified to the equivalent embodiment of equivalent variations possibly also with the technology contents of the disclosure above, but all without departing from technical scheme content, technical spirit according to the present invention all should belong in the range of technical solution of the present invention to any simple modification, equivalent change and modification made for any of the above embodiments.
Claims (7)
1. a kind of sodium and water reaction quantitative experiment device, including sodium pipe (1), plug (14), response measurement pipe (6), instruction
Manage (7), connecting tube (12), conduit (9), switch (8), controller (10), knockout (11), support (13).
2. a kind of sodium and water reaction quantitative experiment device according to claim 1, it is characterised in that：Foregoing sodium pipe (1),
Including piston (2) and graded tube (3), graded tube is provided with graduation mark, and wall is thin, transparent.
3. a kind of sodium and water reaction quantitative experiment device according to claim 2, it is characterised in that：Foregoing graded tube (3),
It is provided with closure (4).
4. a kind of sodium according to claim 1 and water reaction quantitative experiment device, it is characterised in that：Foregoing response measurement
Manage (6), be provided with graduation mark and conduit, connected by connecting tube (12) and instruction pipe (7).
5. a kind of sodium and water reaction quantitative experiment device according to claim 1, it is characterised in that：Foregoing instruction pipe (7),
Graduation mark and conduit are provided with, is connected by connecting tube (12) and response measurement pipe (6).
6. a kind of sodium and water reaction quantitative experiment device according to claim 1, it is characterised in that：Foregoing connecting tube (12),
It is provided with switch (8) and knockout (11), coupled reaction measurement pipe (6) and instruction pipe (7).
7. a kind of sodium according to claim 1 and water reaction quantitative experiment device, it is characterised in that：Foregoing support (13),
Including bottom plate, pole and clip, for fixing the laboratory apparatus such as response measurement pipe (6), instruction pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610290438.7A CN107346632A (en) | 2016-05-05 | 2016-05-05 | A kind of sodium and water reaction quantitative experiment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610290438.7A CN107346632A (en) | 2016-05-05 | 2016-05-05 | A kind of sodium and water reaction quantitative experiment device |
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| Publication Number | Publication Date |
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| CN107346632A true CN107346632A (en) | 2017-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610290438.7A Pending CN107346632A (en) | 2016-05-05 | 2016-05-05 | A kind of sodium and water reaction quantitative experiment device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113552015A (en) * | 2021-06-24 | 2021-10-26 | 武汉昊诚锂电科技股份有限公司 | Method and device for analyzing residual lithium capacity of battery |
| CN115050250A (en) * | 2021-03-08 | 2022-09-13 | 中国石油化工股份有限公司 | Experimental device and method for accurately and quantitatively adding hydrogen |
-
2016
- 2016-05-05 CN CN201610290438.7A patent/CN107346632A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115050250A (en) * | 2021-03-08 | 2022-09-13 | 中国石油化工股份有限公司 | Experimental device and method for accurately and quantitatively adding hydrogen |
| CN115050250B (en) * | 2021-03-08 | 2024-04-02 | 中国石油化工股份有限公司 | Experimental device and method for accurately and quantitatively adding hydrogen |
| CN113552015A (en) * | 2021-06-24 | 2021-10-26 | 武汉昊诚锂电科技股份有限公司 | Method and device for analyzing residual lithium capacity of battery |
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Application publication date: 20171114 |