CN203706549U - NO experimental device - Google Patents
NO experimental device Download PDFInfo
- Publication number
- CN203706549U CN203706549U CN201420092910.2U CN201420092910U CN203706549U CN 203706549 U CN203706549 U CN 203706549U CN 201420092910 U CN201420092910 U CN 201420092910U CN 203706549 U CN203706549 U CN 203706549U
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- syringe
- glass tube
- beaker
- tube
- experimental device
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Abstract
A NO experimental device relates to the technical field of senior middle school chemical experiments. The NO experimental device is composed of a large syringe, a small syringe, an emulsion tube, a flatjaw pinchcock, a rubber stopper, a glass tube and a beaker. A needle of the large syringe is connected with the glass tube, which is inserted in the rubber stopper, through the emulsion tube. The rubber stopper is tightly plugged in the small syringe without a syringe push-rod. A needle of the small syringe is connected with the glass tube through the emulsion tube. A tail end of the glass tube extends into the downmost beaker. The flatjaw pinchcock is clamped on the emulsion tube. Furthermore, sheet copper is arranged in the small syringe beforehand, and hot dilute nitric acid is placed in the beaker. In comparison with the prior art, the disposable syringes which are simple and easily available are used as experimental materials, the purpose of controlling reaction rate through on-off of the flatjaw pinchcock is achieved, and the interference of the air is effectively eliminated. By the NO experimental device, experiments can be displayed to all students in a classroom. Meanwhile, tail gas is easy to process. Thirst for knowledge and curiosity are satisfied for students. In addition, the NO experimental device is environmentally friendly and energy-saving, and is a chemical learning aid and teaching aid which has promotional value.
Description
Technical field
The utility model relates to a kind of high school chemical experiment preparation and nature displaying device, is a kind of NO experimental provision specifically.
Background technology
Copper and dilute nitric acid reaction can generate colourless NO(nitrogen monoxide), react the NO that generates rufous with red fuming nitric acid (RFNA)
2(nitrogen dioxide) has provided traditional experimental demonstration method in senior chemistry required 2, but provides method and step according to teaching material, and because invisible spectro air does not drain, the NO of generation can generate NO with the oxygen reaction of the inside
2, therefore can not draw the conclusion of " copper and dilute nitric acid reaction can generate colourless NO ".For NO and NO
2conversion between the two, the apparatus for demonstrating also not providing.For above-mentioned situation, the author improves traditional device.
Utility model content
The purpose of this utility model is the deficiency for existing teaching material apparatus for demonstrating, provides and utilizes the homemade a kind of NO experimental provision of waste and old raw material.
The purpose of this utility model realizes by following technological means: a kind of NO experimental provision, formed by large syringe, little syringe, emulsion tube, tongs, plug, glass tube and beaker, large syringe needle place is connected with the glass tube that inserts plug by emulsion tube, and plug jam-pack is on the little syringe that removes injector push-rod; The syringe needle place of little syringe is connected with glass tube by emulsion tube, and glass tube end extend in nethermost beaker.
As preferably, above emulsion tube, accompany tongs.
Further, copper sheet is housed in little syringe in advance, is contained with rare nitric acid of heat in beaker, the concentration of dilute sulfuric acid is 3mol/L～5mol/L, and the temperature of heating is 50 DEG C of left and right.
Compared with prior art the utlity model has following obvious advantage: utilize disposable syringe simple and easy to get for experiment material, reach the object of controlling reaction rate by the switch of tongs, effectively got rid of the interference of air.Can in classroom, show by facing to all students, tail gas is processed well simultaneously, has both met student's aspiration to knowledge and curiosity, and environmental protection and energy saving again, are a kind of chemical learning aid and teaching aids that has promotional value.
Brief description of the drawings
Fig. 1 is the utility model schematic diagram.
Wherein 1. pistons, 2. large syringe, 3. emulsion tube, 4. tongs, 5. plug, 6. little syringe, 7. glass tube, 8. beaker, 9. copper sheet, 10. rare nitric acid of heat.
Embodiment
Below in conjunction with brief description of the drawings, the utility model is described in further detail:
A kind of NO experimental provision, formed by large syringe 1, little syringe 6, emulsion tube 3, tongs 4, plug 5, glass tube 7 and beaker 8, large syringe 1 syringe needle place is connected with the glass tube 7 that inserts plug 5 by emulsion tube 3, and plug 5 jam-packs are on the little syringe 6 that removes injector push-rod; The syringe needle place of little syringe 6 is connected with glass tube 7 by emulsion tube 3, and glass tube 7 ends extend in nethermost beaker 8.Emulsion tube 3 accompanies tongs 4 above.The interior copper sheet 9 that is equipped with in advance of little syringe 6, is contained with hot rare nitric acid 10 in beaker 8.
When use: assemble instrument according to figure, and the impermeability of verifying attachment, copper sheet 9 is placed in little syringe 6, in beaker 8, add appropriate hot rare nitric acid 10, open tongs 4, mobile piston 1 outward at leisure, take the air in little syringe 6 away, rare nitric acid 10 of heat enters in little syringe until be full of, close two tongses 4 between syringe, can see that copper sheet 9 and rare nitric acid 10 of heat react, solution turned blue, produced simultaneously gas is discharged reactant liquor until little syringe 6 is interior and is all full of colourless gas, close tongs 4 below, having reacted of copper and rare nitric acid, can see colourless NO.Open two tongses 4 between syringe, leave standstill a period of time, can observe colourless gas (NO) and become rufous (NO
2); And then demonstrate the character of NO.Can also suck water, demonstration nitrogen oxides reacts with water; Finally, the liquid in syringe is slowly filled into the container that fills concentrated sodium hydroxide, can effectively eliminates their pollutions to environment.
In a word, the utility model provides a kind of NO experimental provision.The above; it is only a part of embodiment of the present utility model; protection domain of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.
Claims (3)
1. a NO experimental provision, formed by large syringe (1), little syringe (6), emulsion tube (3), tongs (4), plug (5), glass tube (7) and beaker (8), it is characterized in that: large syringe (1) syringe needle place is connected with the glass tube (7) that inserts plug (5) by emulsion tube (3), and plug (5) jam-pack is on the little syringe (6) that removes injector push-rod; The syringe needle place of little syringe (6) is connected with glass tube (7) by emulsion tube (3), and glass tube (7) end extend in nethermost beaker (8).
2. a kind of NO experimental provision according to claim 1, is characterized in that: emulsion tube (3) accompanies tongs (4) above.
3. a kind of NO experimental provision according to claim 1, is characterized in that: copper sheet (9) is housed in little syringe (6) in advance, is contained with rare nitric acid (10) of heat in beaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420092910.2U CN203706549U (en) | 2014-03-03 | 2014-03-03 | NO experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420092910.2U CN203706549U (en) | 2014-03-03 | 2014-03-03 | NO experimental device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203706549U true CN203706549U (en) | 2014-07-09 |
Family
ID=51056953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420092910.2U Expired - Fee Related CN203706549U (en) | 2014-03-03 | 2014-03-03 | NO experimental device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203706549U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679164A (en) * | 2014-11-20 | 2016-06-15 | 林师龙 | Experimental device used for reaction between copper and dilute nitric acid |
-
2014
- 2014-03-03 CN CN201420092910.2U patent/CN203706549U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679164A (en) * | 2014-11-20 | 2016-06-15 | 林师龙 | Experimental device used for reaction between copper and dilute nitric acid |
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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 |
Granted publication date: 20140709 Termination date: 20150303 |
|
| EXPY | Termination of patent right or utility model |