CN204884369U - Oxygen volume fraction's environment -friendly experimental apparatus in survey air - Google Patents
Oxygen volume fraction's environment -friendly experimental apparatus in survey air Download PDFInfo
- Publication number
- CN204884369U CN204884369U CN201520660757.3U CN201520660757U CN204884369U CN 204884369 U CN204884369 U CN 204884369U CN 201520660757 U CN201520660757 U CN 201520660757U CN 204884369 U CN204884369 U CN 204884369U
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- CN
- China
- Prior art keywords
- glass tube
- copper wire
- rubber stopper
- horminess glass
- hard glass
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- Expired - Fee Related
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model provides an oxygen volume fraction's environment -friendly experimental apparatus in survey air, its main characterized in that: it comprises iron stand platform (4), piston (5), alcohol burner (6) that rubber stopper (1), hard glass pipe (2) of being equipped with copper wire (3), band iron pressed from both sides. Hard glass pipe (2) the level that is equipped with copper wire (3) is fixed on iron stand platform (4), and the left end mouth of pipe of tight hard glass pipe (2) is filled in in rubber stopper (1). Place in hard glass pipe (2) that are arranged in copper wire (3) right side piston (5). The below in hard glass pipe (2) is placed in alcohol burner (6). The textbook device has the defect: great deviation appears in the experimental result, the red phosphorus that is firing contaminated air during white cigarette can give off the air before stretching into gas bottle, red phosphorus burns in gas bottle and emits a large amount of heat, possibly washes the rubber stopper open, makes the experiment failure. Use the utility model discloses doing and testing not only environmental protection, the experimental result more is close true moreover.
Description
Technical field
The utility model belongs to chemical field, relates to a kind of chemical experiment device, particularly for demonstrating the determination experiment of oxygen purity in air on junior middle school chemistry textbook
.
Background technology
2in the air of ninth grade chemistry the 13rd page, the textbook that Shanghai in January, 012 education publishing house publishes, the determination experiment of oxygen purity, operates in textbook: 1, also marked by gas bottle 5 decile like this.2, in the combustion spoon being with rubber stopper and conduit, fill red phosphorus, by the tongs clamping on sebific duct, the red phosphorus in combustion spoon is placed on spirit lamp flame and lights, and stretch into rapidly in gas bottle, jam-pack rubber stopper.3, after gas bottle cool to room temperature, conduit is inserted in the beaker be filled with water, opens tongs, observe phenomena.Do experiment with the experimental provision in textbook and there is following defect: when the red phosphorus that ignite puts in gas bottle, the air heats in gas bottle expands, and causes partial air effusion gas bottle, makes experimental result occur relatively large deviation; The red phosphorus that ignite white cigarette before putting in gas bottle can be dispersed into contaminated air in air; Red phosphorus burns and releases a large amount of heat in gas bottle, likely washes rubber stopper open, makes the failure of an experiment
.
Utility model content
The utility model object is to provide a kind of environment-friendly type experimental provision measuring oxygen purity in air, uses the utility model to measure the volume of oxygen in air, and experimental result is closer to the fact, and safe, environment friendly and pollution-free.The utility model highly versatile, can reuse, and is not only suitable on classroom and does lecture experiment, is also suitable for student and does grouping experiment
.
The purpose of this utility model realizes by the following method:
Measure an environment-friendly type experimental provision for oxygen purity in air, be primarily characterized in that: it is made up of rubber stopper (1), the horminess glass tube (2) that copper wire (3) are housed, the iron stand (4) of band iron clamp, piston (5), spirit lamp (6)
.
The horminess glass tube (2) that copper wire (3) are housed is horizontally fixed on iron stand (4), the left end mouth of pipe of rubber stopper (1) jam-pack horminess glass tube (2).Piston (5) is held in place in the horminess glass tube (2) on copper wire (3) right side.Spirit lamp (6) is placed on the below of horminess glass tube (2)
.
Experimentation: first connect instrument, testing fixture impermeability.With one end mouth of pipe of rubber stopper (3) jam-pack glass tube (2), be then first placed in horminess glass tube (2) by copper wire (3), then piston (5) is also put in horminess glass tube (2).From rubber stopper (1) inner end to volume 5 decile of the horminess glass tube (2) at piston (5) inboard edge, lower mark will be done.Then with iron clamp, the horminess glass tube (2) that copper wire (3) and piston (5) are housed is horizontally fixed on iron stand (4), is plugged with that end on the left side of rubber stopper (1).During experiment, move left and right in the below of horminess glass tube (2) with the flame envelope of spirit lamp (6), the flame envelope of spirit lamp (6) is aimed at copper wire (3) heating in horminess glass tube (2) after horminess glass tube (2) is heated evenly, can see, during beginning, piston (5) moves right, this is because piston (5) is passed to the right after expanding by the air heats in horminess glass tube (2).Can also see, the copper wire (3) of the light in horminess glass tube (2) becomes black, this is because copper wire (3) generates the cupric oxide of black with the oxygen reaction in horminess glass tube (2) in a heated condition.Stop heating when copper wire (3) turns black completely, allow horminess glass tube (2) cool.Can see that again piston (5) is moved to the left when horminess glass tube (2) cool to room temperature, and piston (5) rests on 4 scale places, namely the volume of air be sealed in horminess glass tube (2) decreases about 1/5th volumes, this is because copper wire (3) is sealed in the oxygen accounting for volume of air 1/5th in horminess glass tube (2), so cumulative volume decreases about 1/5th with oxygen generation consumption of chemical reaction in a heated condition.The aerial volume of above phenomenon sufficient proof oxygen accounts for 1/5th
.
The beneficial effects of the utility model are: with copper wire and oxygen reaction, and safety, environmental protection, five are polluted.Device highly versatile, is not only suitable for teacher and does lecture experiment, be also suitable for student and do grouping experiment
.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present utility model
.
Mark in figure represents respectively:
(1) iron stand (5) piston (6) spirit lamp of rubber stopper (2) horminess glass tube (3) copper wire (4) band iron clamp
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail:
Measure an environment-friendly type experimental provision for oxygen purity in air, be primarily characterized in that: it is made up of rubber stopper (1), the horminess glass tube (2) that copper wire (3) are housed, the iron stand (4) of band iron clamp, piston (5), spirit lamp (6)
.
The horminess glass tube (2) that copper wire (3) are housed is horizontally fixed on iron stand (4), the left end mouth of pipe of rubber stopper (1) jam-pack horminess glass tube (2).Piston (5) is held in place in the horminess glass tube (2) on copper wire (3) right side.Spirit lamp (6) is placed on the below of horminess glass tube (2)
.
Using method of the present utility model: first connect instrument, testing fixture impermeability.With one end mouth of pipe of rubber stopper (3) jam-pack glass tube (2), be then first placed in horminess glass tube (2) by copper wire (3), then piston (5) is also put in horminess glass tube (2).From rubber stopper (1) inner end to volume 5 decile of the horminess glass tube (2) at piston (5) inboard edge, lower mark will be done.Then with iron clamp, the horminess glass tube (2) that copper wire (3) and piston (5) are housed is horizontally fixed on iron stand (4), is plugged with that end on the left side of rubber stopper (1).During experiment, move left and right in the below of horminess glass tube (2) with the flame envelope of spirit lamp (6), the flame envelope of spirit lamp (6) is aimed at copper wire (3) heating in horminess glass tube (2) after horminess glass tube (2) is heated evenly, can see, during beginning, piston (5) moves right, this is because piston (5) is passed to the right after expanding by the air heats in horminess glass tube (2).Can also see, the copper wire (3) of the light in horminess glass tube (2) becomes black, this is because copper wire (3) generates the cupric oxide of black with the oxygen reaction in horminess glass tube (2) in a heated condition.Stop heating when copper wire (3) turns black completely, allow horminess glass tube (2) cool.Can see that again piston (5) is moved to the left when horminess glass tube (2) cool to room temperature, and piston (5) rests on 4 scale places, namely the volume of air be sealed in horminess glass tube (2) decreases about 1/5th volumes, this is because copper wire (3) is sealed in the oxygen accounting for volume of air 1/5th in horminess glass tube (2), so cumulative volume decreases about 1/5th with oxygen generation consumption of chemical reaction in a heated condition.The aerial volume of above phenomenon sufficient proof oxygen accounts for 1/5th.The utility model has the advantages that: with copper wire and oxygen reaction, safety, environmental protection, five are polluted.Device highly versatile, is not only suitable for teacher and does lecture experiment, be also suitable for student and do grouping experiment
.
Claims (1)
1. measure an environment-friendly type experimental provision for oxygen purity in air, be primarily characterized in that: it is made up of rubber stopper (1), the horminess glass tube (2) that copper wire (3) are housed, the iron stand (4) of band iron clamp, piston (5), spirit lamp (6); The horminess glass tube (2) that copper wire (3) are housed is horizontally fixed on iron stand (4), the left end mouth of pipe of rubber stopper (1) jam-pack horminess glass tube (2), piston (5) is held in place in the horminess glass tube (2) on copper wire (3) right side, and spirit lamp (6) is placed on the below of horminess glass tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520660757.3U CN204884369U (en) | 2015-08-30 | 2015-08-30 | Oxygen volume fraction's environment -friendly experimental apparatus in survey air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520660757.3U CN204884369U (en) | 2015-08-30 | 2015-08-30 | Oxygen volume fraction's environment -friendly experimental apparatus in survey air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204884369U true CN204884369U (en) | 2015-12-16 |
Family
ID=54828721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520660757.3U Expired - Fee Related CN204884369U (en) | 2015-08-30 | 2015-08-30 | Oxygen volume fraction's environment -friendly experimental apparatus in survey air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204884369U (en) |
-
2015
- 2015-08-30 CN CN201520660757.3U patent/CN204884369U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20160830 |