CN204576940U - The environment-friendly type experimental provision that a kind of copper and red fuming nitric acid (RFNA) react - Google Patents
The environment-friendly type experimental provision that a kind of copper and red fuming nitric acid (RFNA) react Download PDFInfo
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- CN204576940U CN204576940U CN201520283687.4U CN201520283687U CN204576940U CN 204576940 U CN204576940 U CN 204576940U CN 201520283687 U CN201520283687 U CN 201520283687U CN 204576940 U CN204576940 U CN 204576940U
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- rfna
- nitric acid
- fuming nitric
- red fuming
- copper
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Abstract
The experimental provision that the utility model provides a kind of copper and red fuming nitric acid (RFNA) to react, is primarily characterized in that: it respectively has the small test tube of an aperture (5) by being equipped with the wide-necked bottle (1) of appropriate strong caustic, the first rubber stopper (2), copper rod (3), the second rubber stopper (4), the bottom that copper sheet (7) is housed and middle and upper part, the small beaker (6) of appropriate red fuming nitric acid (RFNA) is housed forms.Now with the experimental provision existing defects that copper in teaching material and red fuming nitric acid (RFNA) react: not environmentally; Drug dosage is large; In nitrogen dioxide absorption process, often there is suck-back phenomenon; Device in teaching material is not suitable for student and does grouping experiment.The experiment using the utility model to do copper and red fuming nitric acid (RFNA) to react, can overcome the defect of teaching material device, react and occur at any time to stop at any time, easy to use, and safety, environmental protection, pollution-free.The utility model is not only suitable on classroom and does lecture experiment, is also suitable for student and does grouping experiment.
Description
one, technical field
the utility model belongs to chemical field, relates to a kind of chemical experiment device, particularly for demonstrating the experiment that on senior chemistry textbook, copper and red fuming nitric acid (RFNA) react.
two, background technology
the experiment of senior I chemistry textbook the 80th page of copper that Shandong science tech publishing house publishes in July, 2014 and red fuming nitric acid (RFNA) reaction: put a fritter copper sheet in a test tube, add a small amount of red fuming nitric acid (RFNA) (15mol/L), seal test tube mouth with the cotton being moistened with sodium hydroxide solution immediately, observe the phenomenon occurred in test tube.Do experiment with this device and there is following shortcoming: the nitrogen dioxide that 1, reaction generates can not be fully absorbed, and can cause atmospheric pollution.2, the gas flow produced is comparatively large, waste medicine.3, in nitrogen dioxide absorption process, usually there will be suck-back phenomenon.4, this device is not suitable for student and does grouping experiment.
three, utility model content
the utility model object is the environment-friendly type experimental provision providing a kind of copper and red fuming nitric acid (RFNA) to react.Make device not be only applicable to classroom does lecture experiment, be also applicable to student and do grouping experiment, and can environmental pollution be reduced.
the purpose of this utility model realizes by the following method:
the environment-friendly type experimental provision that copper and red fuming nitric acid (RFNA) react, is primarily characterized in that: it respectively has the small test tube of an aperture (5) by being equipped with the wide-necked bottle (1) of appropriate strong caustic, the first rubber stopper (2), copper rod (3), the second rubber stopper (4), the bottom that copper sheet (7) is housed and middle and upper part, the small beaker (6) of appropriate red fuming nitric acid (RFNA) is housed forms.Dug a hole aperture (9) in small test tube (5) bottom, this aperture is the import of red fuming nitric acid (RFNA), has dug an aperture (8) in the middle and upper part of small test tube (5), and this aperture is the venthole of the nitrogen dioxide generated after copper and red fuming nitric acid (RFNA) react.
experimentation: first connect instrument, the impermeability of testing fixture, appropriate strong caustic is put in wide-necked bottle (1), appropriate red fuming nitric acid (RFNA) is put in small beaker (6), the small beaker (6) that appropriate red fuming nitric acid (RFNA) is housed carefully is put in the wide-necked bottle (1) that appropriate strong caustic is housed with tweezers.Copper rod (3) is fixed on the second rubber stopper (4) through after the first rubber stopper (2), regulates the distance between the first rubber stopper (2) and the second rubber stopper (4), and copper rod can move up and down at the first rubber stopper (2).With tweezers, copper sheet threading bottom and middle and upper part are respectively had in the small test tube (5) of an aperture, with the second rubber stopper (4) the jam-pack small test tube (5) with copper rod (3) and the first rubber stopper (2).Use the first rubber stopper (2) jam-pack wide-necked bottle (1) again, small test tube (5) is directly over small beaker (6), and the copper sheet at this moment in small test tube (5) does not contact with the red fuming nitric acid (RFNA) in small beaker (6).Move down copper rod (3), in the red fuming nitric acid (RFNA) that small test tube (5) end is immersed in small beaker (6), red fuming nitric acid (RFNA) enters from the aperture (9) at small test tube (5) end that small test tube (5) is to be contacted with copper sheet, at this moment can see copper sheet and red fuming nitric acid (RFNA) generation vigorous reaction, copper sheet surface produces a large amount of bubble, with rufous smog, rufous smog is overflowed from the aperture (8) of small test tube (5) middle and upper part, be full of whole wide-necked bottle (1), solution becomes blueness, and blue solution slowly becomes green.Then toward pull-up copper rod, the red fuming nitric acid (RFNA) in small test tube (5) spills from the aperture (9) of small test tube (5) bottom, and copper sheet and red fuming nitric acid (RFNA) disengage, and reaction stopping is carried out.Gas color under the effect of the strong caustic in wide-necked bottle (1) in wide-necked bottle (1) from depth to shallow, until become colorless.
the beneficial effects of the utility model are: 1, react and carry out in closed container, safe and reliable, pollution-free.2, device is simple, and easy and simple to handle, phenomenon is obvious.3, reagent dosage is few, and equipment is simple and easy to get.4, reaction occurs to stop at any time at any time.4, highly versatile, this device is not only applicable to classroom does lecture experiment, is also applicable to student and does grouping experiment.
four, accompanying drawing explanation
fig. 1 is structural drawing of the present utility model.
mark in figure represents respectively:
(1) wide-necked bottle (2) first rubber stopper (3) copper rod (4) second rubber stopper (5) bottom and middle and upper part that appropriate strong caustic is housed respectively have the small test tube of an aperture (6) that small beaker (7) copper sheet (8) vent port (9) inlet opening of appropriate red fuming nitric acid (RFNA) is housed
five, embodiment
below in conjunction with embodiment, the utility model is described in further detail:
the environment-friendly type experimental provision that copper and red fuming nitric acid (RFNA) react, is primarily characterized in that: it respectively has the small test tube of an aperture (5) by being equipped with the wide-necked bottle (1) of appropriate strong caustic, the first rubber stopper (2), copper rod (3), the second rubber stopper (4), the bottom that copper sheet (7) is housed and middle and upper part, the small beaker (6) of appropriate red fuming nitric acid (RFNA) is housed forms.
during processing small test tube (5), a hole aperture (9) is being dug in small test tube (5) bottom, this aperture is the import of red fuming nitric acid (RFNA), has dug an aperture (8) in the middle and upper part of small test tube (5), and this aperture is the venthole of the nitrogen dioxide generated after copper and red fuming nitric acid (RFNA) react.
using method of the present utility model: first connect instrument, the impermeability of testing fixture, appropriate strong caustic is put in wide-necked bottle (1), appropriate red fuming nitric acid (RFNA) is put in small beaker (6), the small beaker (6) that appropriate red fuming nitric acid (RFNA) is housed carefully is put in the wide-necked bottle (1) that appropriate strong caustic is housed with tweezers.Copper rod (3) is fixed on the second rubber stopper (4) through after the first rubber stopper (2), regulates the distance between the first rubber stopper (2) and the second rubber stopper (4), and copper rod can move up and down at the first rubber stopper (2).With tweezers, copper sheet threading bottom and middle and upper part are respectively had in the small test tube (5) of an aperture, with the second rubber stopper (4) the jam-pack small test tube (5) with copper rod (3) and the first rubber stopper (2).Use the first rubber stopper (2) jam-pack wide-necked bottle (1) again, small test tube (5) is directly over small beaker (6), and the copper sheet at this moment in small test tube (5) does not contact with the red fuming nitric acid (RFNA) in small beaker (6).When the copper rod that moves down (3), in the red fuming nitric acid (RFNA) that small test tube (5) end is immersed in small beaker (6), red fuming nitric acid (RFNA) enters from the aperture (9) at small test tube (5) end that small test tube (5) is to be contacted with copper sheet, at this moment can see copper sheet and red fuming nitric acid (RFNA) generation vigorous reaction, copper sheet surface produces a large amount of bubble, with rufous smog, rufous smog is overflowed from the aperture (8) of small test tube (5) middle and upper part, be full of whole wide-necked bottle (1), solution becomes blueness, and blue solution slowly becomes green.Then toward pull-up copper rod, the red fuming nitric acid (RFNA) in small test tube (5) spills from small test tube (5) bottom, and copper sheet and red fuming nitric acid (RFNA) disengage, and reaction stopping is carried out.Gas color under the effect of the strong caustic in wide-necked bottle (1) in wide-necked bottle (1) from depth to shallow, until become colorless.Use the utility model has the advantages that: react and carry out in closed container, safe and reliable, pollution-free; Device is simple, and easy and simple to handle, phenomenon is obvious; Reagent dosage is few, and equipment is simple and easy to get; Reaction occurs to stop at any time at any time.
the utility model highly versatile, is not only applicable to classroom does lecture experiment, is also applicable to student and does grouping experiment.
Claims (2)
1. the experimental provision that reacts of copper and red fuming nitric acid (RFNA), is primarily characterized in that: it respectively has the small test tube of an aperture (5) by being equipped with the wide-necked bottle (1) of appropriate strong caustic, the first rubber stopper (2), copper rod (3), the second rubber stopper (4), the bottom that copper sheet (7) is housed and middle and upper part, the small beaker (6) of appropriate red fuming nitric acid (RFNA) is housed forms, the small beaker (6) that appropriate red fuming nitric acid (RFNA) is housed is put in the wide-necked bottle (1) that appropriate strong caustic is housed, copper rod (3) is through being fixed on the second rubber stopper (4) after the first rubber stopper (2), regulate the distance between the first rubber stopper (2) and the second rubber stopper (4), copper rod (3) can move up and down at the first rubber stopper (2), the second rubber stopper (4) jam-pack with copper rod (3) and the first rubber stopper (2) is equipped with the mouth of pipe of the small test tube (5) of appropriate copper sheet (7), the first rubber stopper (2) jam-pack with copper rod (3) and the second rubber stopper (4) is equipped with the wide-necked bottle (1) of appropriate strong caustic, the bottom of small test tube (5) is immersed in the red fuming nitric acid (RFNA) in small beaker (6).
2. the experimental provision that reacts of a kind of copper and red fuming nitric acid (RFNA) as claimed in claim 1, be primarily characterized in that: copper rod (3) moves down, small test tube (5) declines, small test tube (5) bottom is immersed in the inner red fuming nitric acid (RFNA) of small beaker (6), red fuming nitric acid (RFNA) enters from the aperture at small test tube (5) end that small test tube (5) is to be contacted with copper sheet (7), toward pull-up copper rod (3), small test tube (5) rises, red fuming nitric acid (RFNA) in small test tube (5) flows out and drains in small beaker (6) from the aperture (9) at small test tube (5) end, and copper sheet and red fuming nitric acid (RFNA) disengage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520283687.4U CN204576940U (en) | 2015-05-06 | 2015-05-06 | The environment-friendly type experimental provision that a kind of copper and red fuming nitric acid (RFNA) react |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520283687.4U CN204576940U (en) | 2015-05-06 | 2015-05-06 | The environment-friendly type experimental provision that a kind of copper and red fuming nitric acid (RFNA) react |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204576940U true CN204576940U (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520283687.4U Expired - Fee Related CN204576940U (en) | 2015-05-06 | 2015-05-06 | The environment-friendly type experimental provision that a kind of copper and red fuming nitric acid (RFNA) react |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204576940U (en) |
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2015
- 2015-05-06 CN CN201520283687.4U patent/CN204576940U/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 |
Granted publication date: 20150819 Termination date: 20160506 |
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| CF01 | Termination of patent right due to non-payment of annual fee |