CN102723029A - Experiment demonstration device of copper and concentrated nitric acid reaction - Google Patents
Experiment demonstration device of copper and concentrated nitric acid reaction Download PDFInfo
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- CN102723029A CN102723029A CN2011100790800A CN201110079080A CN102723029A CN 102723029 A CN102723029 A CN 102723029A CN 2011100790800 A CN2011100790800 A CN 2011100790800A CN 201110079080 A CN201110079080 A CN 201110079080A CN 102723029 A CN102723029 A CN 102723029A
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- plastic
- nitric acid
- transparent shell
- copper
- transparent plastic
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Abstract
The invention provides an experiment demonstration device of a copper and concentrated nitric acid reaction. The device mainly comprises a transparent plastic shell injector (1), a transparent plastic shell injector (2), a connecting flexible pipe (3), a fixing iron clamp (4) and a fixing support (5). The device is characterized in that: the transparent plastic shell injector (1) is vertically fixed on the fixing iron clamp (4), and the transparent plastic shell injector (1) and the transparent plastic shell injector (2) are connected by a connecting flexible pipe (3). The device has the following advantages: (1) a method of operating the copper and concentrated nitric acid reaction in a sealed device is employed, a reaction rate can be controlled, the reaction can be stopped at any time, the overflow of a toxic gas nitrogen dioxide is not prevented, and the method is safe and environmentally friendly; (2) a life material or a waste material beside a student is taken as a test material, which is in accordance with the spirit of the new curriculum reform, an experimental exploration desire of the student can be simulated, and a saving consciousness is reflected; (3) operation is simple, materials are easy to obtain, and experiment cost is saved.
Description
Technical field
The present invention relates to a kind of teaching demonstration apparatus, relate to the teaching demonstration device of a kind of safety demonstration copper and red fuming nitric acid (RFNA) reaction experiment.
Background technology
At present, there is following shortcoming in existing device in the teaching material: on the one hand. and the experimental implementation of copper and red fuming nitric acid (RFNA) reaction is in the teaching material, adds copper sheet in vitro, in test tube, adds the 1-2ml red fuming nitric acid (RFNA) again.Reaction is carried out immediately, and reaction is violent, is difficult to control, and experimentation can discharge toxic gas nitrogen dioxide, is detrimental to health.On the other hand. the processing of nitrogen dioxide is reasonable inadequately, clogs the test tube mouth with the cotton balls that dips in sodium hydroxide solution in the teaching material, and this method can only absorb a certain amount of nitrogen dioxide, also can cause overflowing of nitrogen dioxide.
Summary of the invention
The present invention is directed to the problem that prior art exists, a kind of copper and red fuming nitric acid (RFNA) reaction experiment apparatus for demonstrating are provided.This copper and red fuming nitric acid (RFNA) reaction experiment apparatus for demonstrating can be controlled reaction rate, can not cause overflowing of toxic gas nitrogen dioxide, and simple in structure, easy to operate, material is easy to get, and practice thrift experimental cost.
Technical scheme of the present invention is: copper of the present invention and red fuming nitric acid (RFNA) reaction experiment apparatus for demonstrating; Mainly comprise plastic, transparent shell syringe (1; 2), connect flexible pipe (3), fixedly iron clamp (4) and fixed support (5); It is characterized in that: plastic, transparent shell syringe (1) vertically is fixed on fixedly on the iron clamp (4), connects with connecting flexible pipe (3) between plastic, transparent shell syringe (1) and the plastic, transparent shell syringe (2).
Said plastic, transparent shell syringe (1) and plastic, transparent shell syringe (2) adopt the polypropylene or the tygon of corrosion-resistant transparent material.
Said plastic, transparent shell syringe (1) and plastic, transparent shell syringe (2) are capacity 20ml.
Said connection flexible pipe (3) length is 20cm.
Advantageous effect of the present invention is: 1. being employed in of pair copper and red fuming nitric acid (RFNA) reaction carried out method of operating in the obturator, can control reaction rate, can let reaction stop at any time, can not cause overflowing of toxic gas nitrogen dioxide, more safety and environmental protection.2. do experiment material with student's life material or discarded object at one's side, meet new curriculum reform spirit, more can excite student's experiment to probe into desire, also embody a kind of economy consciousness.3. simple to operate, material is easy to get, and practices thrift experimental cost.
Description of drawings
Fig. 1 is a concrete structure synoptic diagram of the present invention
Accompanying drawing is expressed as: 1,2 are plastic, transparent shell syringe; 3 are fixing iron clamp for connecting flexible pipe, 4; 5 is fixed support
Embodiment
Concrete use-pattern of the present invention is:
1. in plastic, transparent shell syringe (20ml) 1, add a copper sheet, shift the piston of transparent outer cover syringe onto bottom then less than its internal diameter.Draw the red fuming nitric acid (RFNA) of 2-3ml with plastic, transparent shell syringe (20ml) 2, be communicated with two plastic, transparent shell syringes with the woven hose of 20cm.
2. plastic, transparent shell syringe 1 vertically is fixed on fixedly on the iron clamp 4 (laboratory is furnished with); Promote the piston of plastic, transparent shell syringe 2 gently, in plastic, transparent shell syringe 1, slowly push a small amount of red fuming nitric acid (RFNA), along with the generation of nitrogen dioxide gas; The piston of plastic, transparent shell syringe 1 can rise gradually; When piston rises to the 10cm place, slowly outwards spur the piston 2 of plastic, transparent shell syringe again, let in the plastic, transparent shell syringe 1 red fuming nitric acid (RFNA) all flow back in the plastic, transparent shell syringe 2; At this moment, reaction stops immediately.
3. instruction of papil is observed the color of gas in the plastic, transparent shell syringe 1.
4. the processing of nitrogen dioxide; Remove and be communicated with two plastic, transparent shell syringe woven hoses; Piston in the pulling plastic, transparent shell syringe 1; The sodium hydroxide solution of suction 10%, and then promote the sodium hydroxide solution of its piston by the liquid feeding 10% of plastic, transparent shell syringe 1, repeatable operation can be disposed the nitrogen dioxide gas in the plastic, transparent shell syringe 1 for 2-3 time fully like this.
5. the liquid in the plastic, transparent shell syringe 2 is moved on in the returnable bottle of appointment, place the clean back of two syringes washing for use with distilled water.
Claims (3)
1. copper and red fuming nitric acid (RFNA) reaction experiment apparatus for demonstrating; Mainly comprise plastic, transparent shell syringe (1; 2), connect flexible pipe (3), fixedly iron clamp (4) and fixed support (5); It is characterized in that: plastic, transparent shell syringe (1) vertically is fixed on fixedly on the iron clamp (4), connects with connecting flexible pipe (3) between plastic, transparent shell syringe (1) and the plastic, transparent shell syringe (2).
2. copper according to claim 1 and red fuming nitric acid (RFNA) reaction experiment apparatus for demonstrating is characterized in that: said plastic, transparent shell syringe (1) and plastic, transparent shell syringe (2) adopt corrosion-resistant transparent polypropylene or polythene material.
3. copper according to claim 1 and red fuming nitric acid (RFNA) reaction experiment apparatus for demonstrating is characterized in that: said plastic, transparent shell syringe (1) and plastic, transparent shell syringe (2) capacity are 20ml; Said connection flexible pipe (3) length is 20cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100790800A CN102723029A (en) | 2011-03-31 | 2011-03-31 | Experiment demonstration device of copper and concentrated nitric acid reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100790800A CN102723029A (en) | 2011-03-31 | 2011-03-31 | Experiment demonstration device of copper and concentrated nitric acid reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102723029A true CN102723029A (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100790800A Pending CN102723029A (en) | 2011-03-31 | 2011-03-31 | Experiment demonstration device of copper and concentrated nitric acid reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102723029A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255431A (en) * | 2013-04-28 | 2013-08-21 | 浙江工业大学 | Method of preparing mixed gas of N2O3 or NO2 and NO by virtue of indirect electrolysis |
-
2011
- 2011-03-31 CN CN2011100790800A patent/CN102723029A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255431A (en) * | 2013-04-28 | 2013-08-21 | 浙江工业大学 | Method of preparing mixed gas of N2O3 or NO2 and NO by virtue of indirect electrolysis |
| CN103255431B (en) * | 2013-04-28 | 2016-02-17 | 浙江工业大学 | A kind of indirect electrolytic prepares N 2o 3or NO 2with the method for the mixed gas of NO |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121010 |