CN2876946Y - Demonstrator for combustible burning condition - Google Patents
Demonstrator for combustible burning condition Download PDFInfo
- Publication number
- CN2876946Y CN2876946Y CN 200620089556 CN200620089556U CN2876946Y CN 2876946 Y CN2876946 Y CN 2876946Y CN 200620089556 CN200620089556 CN 200620089556 CN 200620089556 U CN200620089556 U CN 200620089556U CN 2876946 Y CN2876946 Y CN 2876946Y
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- CN
- China
- Prior art keywords
- demonstrator
- conical flask
- necked bottle
- sheng
- water
- 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.)
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Abstract
A demonstrator for combustible burning condition pertains to teaching demonstration equipments, in particular to a demonstrator for white phosphorus burning in water. The utility model provides a demonstrator which can demonstrate white phosphorus burning in water comprising a conical flask with a separatory funnel fixed on its rubber stopper with double hole. The main point of structure is that the conical flask connects successively with a cold water jar, a hot water jar and a sodium hydroxide solution jar through catheter.
Description
Technical field:
The utility model is to belong to the teaching demonstration instrument; Especially demonstrate the burning of white phosphorus in water.
Background technology:
In junior middle school chemistry teaching, can only demonstrate the experiment that white phosphorus burns in air, but can not demonstrate the experiment of white phosphorus, and the white cigarette that produces is diffused in the air and pollutes at submerged combustion; Therefore, teacher's explanation difficulty is bigger, and the student can only dream up, and has influenced quality of instruction.
The utility model content:
The utility model is exactly at the problems referred to above, and a kind of apparatus for demonstrating of demonstrating white phosphorus in the submerged combustion situation is provided.
The utility model adopts following technical scheme: the utility model comprises conical flask, be fixed with separating funnel on the rubber stopper with double hole of conical flask, its structural feature conical flask links to each other with Sheng cold water wide-necked bottle, Sheng hot water wide-necked bottle, Sheng sodium hydroxide solution wide-necked bottle successively by conduit.
The beneficial effects of the utility model:
The utility model device can be demonstrated the situation of white phosphorus at submerged combustion, has remedied the blank of junior middle school chemistry education experiment, makes students can produce well directly perceived, perceptual knowledge, and helps to improve the quality of teaching.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Embodiment:
The utility model comprises conical flask 5, is fixed with separating funnel 7 on the rubber stopper with double hole 9 of conical flask 5, and conical flask 5 links to each other with Sheng cold water wide-necked bottle 3, Sheng hot water wide-necked bottle 2, Sheng sodium hydroxide solution wide-necked bottle 1 successively by conduit 4.
Below in conjunction with a description of drawings presentation process of the present utility model:
At first, place manganese dioxide 6 in conical flask 5, open the valve 8 of separating funnel 7, hydrogen peroxide flows down, and with manganese dioxide 6 reactions, generates oxygen; Oxygen enters through conduit 4 and contains cold water wide-necked bottle 3, because cold water temperature is below 40 ℃, temperature does not reach the white phosphorus required minimum temperature of burning, not burning of white phosphorus in the water; Oxygen enters through conduit 4 and contains hot water wide-necked bottle 2, because the hot water temperature reaches more than 70 ℃, white phosphorus is very fast burning in water, and produces a large amount of white cigarettes; To containing in the sodium hydroxide solution wide-necked bottle 1, the reaction back generates phosphorus pentoxide to white cigarette, has avoided the pollution to environment through conduit 4.
Claims (1)
1. combustible burning condition apparatus for demonstrating, comprise conical flask (5), be fixed with separating funnel (7) on the rubber stopper with double hole (9) of conical flask (5), it is characterized in that conical flask (5) links to each other with Sheng cold water wide-necked bottle (3), Sheng hot water wide-necked bottle (2), Sheng sodium hydroxide solution wide-necked bottle (1) successively by conduit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620089556 CN2876946Y (en) | 2006-03-07 | 2006-03-07 | Demonstrator for combustible burning condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620089556 CN2876946Y (en) | 2006-03-07 | 2006-03-07 | Demonstrator for combustible burning condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2876946Y true CN2876946Y (en) | 2007-03-07 |
Family
ID=37820183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620089556 Expired - Fee Related CN2876946Y (en) | 2006-03-07 | 2006-03-07 | Demonstrator for combustible burning condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2876946Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710405A (en) * | 2017-02-07 | 2017-05-24 | 李慧敏 | Phosphorus combustion device capable of being safely operated |
-
2006
- 2006-03-07 CN CN 200620089556 patent/CN2876946Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710405A (en) * | 2017-02-07 | 2017-05-24 | 李慧敏 | Phosphorus combustion device capable of being safely operated |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |