CN209879942U - Environment-friendly experimental device for copper and dilute nitric acid reaction - Google Patents
Environment-friendly experimental device for copper and dilute nitric acid reaction Download PDFInfo
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- CN209879942U CN209879942U CN201920498385.7U CN201920498385U CN209879942U CN 209879942 U CN209879942 U CN 209879942U CN 201920498385 U CN201920498385 U CN 201920498385U CN 209879942 U CN209879942 U CN 209879942U
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Abstract
The utility model provides an environment-friendly experimental apparatus for copper and rare nitric acid reaction, its main characterized in that: the novel oxygen-free air-conditioning device comprises an air bag (1) filled with nitrogen, a first air duct (2), a latex tube (3), a spring clamp (4), a second air duct (5), a first single-hole rubber plug (6), a hard glass tube (7) which is provided with a groove in a copper sheet (8) and provided with two holes dug on the wall opposite to the groove, a second single-hole rubber plug (9), a rubber head dropper (10) sucked with dilute nitric acid, an iron stand table (11) provided with the iron clamp, an injector (12) filled with oxygen, a rubber plug (13), a third single-hole rubber plug (14), a third air duct (15) and a beaker (16) filled with a sodium hydroxide solution. Textbook devices have drawbacks: the dosage of the medicine is large and is not environment-friendly; the formation of a colorless gas is difficult to observe; the textbook device is not suitable for students to do grouping experiments. The utility model can overcome the defects of textbook device, is safe and environment-friendly, saves medicine and has obvious phenomenon.
Description
One, the technical field
The utility model belongs to the chemistry field relates to a chemistry experimental apparatus, and is specifically used for demonstrating the experiment of copper and rare nitric acid reaction in high school chemistry textbooks.
Second, background Art
Experiment of copper and dilute nitric acid reaction on page 80 of high-chemistry textbook published by Shandong science and technology Press 2014 7 months: a small piece of copper sheet was placed in a test tube, a small amount of dilute nitric acid was added, the mouth of the tube was immediately sealed with cotton dipped in sodium hydroxide solution, and the phenomenon occurring in the test tube was observed. The textbook device has defects in experiments: the medicine dosage is large and is wasted; toxic gas is easy to leak and is not environment-friendly; the formation of the colorless gas nitric oxide is difficult to observe; the textbook experimental device is not suitable for students to do grouping experiments.
Third, the contents of the utility model
The utility model aims to provide an environment-friendly experimental apparatus of copper and rare nitric acid reaction. The utility model discloses not only be applicable to the teacher and do the demonstration experiment on the classroom, still be applicable to the student and do the experiment of grouping to can reduce environmental pollution.
The purpose of the utility model is realized by the following method:
the utility model provides an environment-friendly experimental apparatus of copper and dilute nitric acid reaction which the main characterized in that: the novel oxygen-free air-conditioning device comprises an air bag (1) filled with nitrogen, a first air duct (2), a latex tube (3), a spring clamp (4), a second air duct (5), a first single-hole rubber plug (6), a hard glass tube (7) which is provided with a groove in a copper sheet (8) and provided with two holes dug on the wall opposite to the groove, a second single-hole rubber plug (9), a rubber head dropper (10) sucked with dilute nitric acid, an iron stand table (11) provided with the iron clamp, an injector (12) filled with oxygen, a rubber plug (13), a third single-hole rubber plug (14), a third air duct (15) and a beaker (16) filled with a sodium hydroxide solution.
A hard glass tube (7) which is provided with a groove in a copper sheet (8) and is dug with two holes on the wall at the opposite side of the groove is horizontally fixed on an iron support (11) with an iron clamp. A second single-hole rubber plug (9) with a rubber dropper (10) is used for tightly plugging a hole on the wall right above the groove of the hard glass tube (7), and a rubber plug (13) with an injector (12) is used for tightly plugging another hole on the wall of the hard glass tube (7). A third single-hole rubber plug (14) with a third air duct (15) is tightly plugged with a hard glass tube (7) right end tube opening which is provided with a groove in a copper sheet (8) and provided with two holes dug in the wall opposite to the groove, and a first single-hole rubber plug (6) with a second air duct (5) is tightly plugged with a hard glass tube (7) left end tube opening which is provided with a groove in a copper sheet (8) and provided with two holes dug in the wall opposite to the groove. The latex tube (3) with the spring clamp (4) is connected with the second air duct (5) at the outer end of the first single-hole rubber plug (6) and one end of the first air duct (2), and the other end of the first air duct (2) is connected with the air bag (1) filled with nitrogen. The end of the third air duct (15) extends into a beaker (16) filled with sodium hydroxide solution.
The experimental process comprises the following steps: firing a groove on the wall of the hard glass tube (7) by using an alcohol blast lamp at a high temperature, and drilling two holes on the wall of the hard glass tube (7) on the opposite side of the groove by using a glass drill, wherein one hole is positioned on the right opposite side of the groove. The instrument was connected and the air tightness of the device was checked. The copper sheet (8) is placed in a groove of the hard glass tube (7), and the hard glass tube (7) which is provided with the groove in the copper sheet (8) and is dug with two holes on the wall opposite to the groove is horizontally fixed on an iron stand (11) by an iron clamp. Inserting the rubber head dropper (10) absorbed with the dilute nitric acid on the second single-hole rubber plug (9), plugging the second single-hole rubber plug (9) with the rubber head dropper (10) on the hole on the wall right above the groove of the hard glass tube (7), puncturing the syringe (12) filled with oxygen through the rubber plug (13), and plugging the other hole on the wall of the hard glass tube (7) by using the rubber plug (13) with the syringe (12). Inserting a third air duct (15) on a third single-hole rubber plug (14), plugging a hard glass tube (7) right end tube opening which is provided with a groove in a copper sheet (8) and provided with two holes on the wall opposite to the groove by using the third single-hole rubber plug (14) with the third air duct (15), inserting a second air duct (5) on a first single-hole rubber plug (6), plugging a hard glass tube (7) left end tube opening which is provided with a groove in a copper sheet (8) and provided with two holes on the wall opposite to the groove by using a first single-hole rubber plug (6) with the second air duct (5). Then a latex tube (3) with a spring clamp (4) is connected with a second air duct (5) at the outer end of the first single-hole rubber plug (6) and one end of the first air duct (2), and the other end of the first air duct (2) is connected with an air bag (1) filled with nitrogen. The end of the third gas-guide tube (15) is extended into a beaker (16) filled with sodium hydroxide solution. During the experiment, the spring clamp (4) is opened firstly, the air bag (1) filled with nitrogen is extruded, the nitrogen is blown into the hard glass tube (7), and the spring clamp (4) is clamped after the air in the hard glass tube (7) is removed. A rubber head dropper (10) is extruded to drop a proper amount of dilute nitric acid into a groove of a hard glass tube (7), so that a large number of bubbles are generated on the surface of a copper sheet (8), and the copper sheet (8) reacts with the dilute nitric acid to generate colorless gas. Then, the syringe (12) is pushed slightly to inject oxygen into the hard glass tube (7), and the gas in the hard glass tube (7) is seen to turn reddish brown due to the reaction of the oxygen and nitric oxide in the hard glass tube (7) to generate reddish brown nitrogen dioxide gas. After the experiment is finished, the spring clamp (4) is opened, the air bag (1) filled with nitrogen is extruded, reddish brown nitrogen dioxide gas in the hard glass tube (7) is blown into the beaker (16) filled with sodium hydroxide solution by using the nitrogen, and the nitrogen dioxide gas is absorbed by the sodium hydroxide solution, so that the environmental pollution is reduced.
The utility model has the advantages that: safe and environment-friendly, and saves medicines; the phenomenon is obvious, and colorless gas is generated by the reaction of copper and dilute nitric acid; the utility model discloses not only be applicable to the teacher and do the demonstration experiment, still be applicable to the student and do grouping experiment.
Description of the drawings
Fig. 1 is a structural view of the present invention.
The symbols in the figures represent:
(1) an air bag (2) filled with nitrogen, a first air guide tube (3), a latex tube (4), a spring clamp (5), a second air guide tube (6), a first single-hole rubber plug (7) and a hard glass tube (8) with a groove, wherein two holes are dug in the wall opposite to the groove, a copper sheet (9), a second single-hole rubber plug (10) are filled with dilute nitric acid, a rubber head dropper (11), an iron holder table (12) with the iron clamp, an injector (13) with oxygen, a rubber plug (14), a third single-hole rubber plug (15) and a beaker with sodium hydroxide solution, wherein the rubber head dropper (11), the iron holder table and the third single-hole rubber plug (16) are filled with
Fifth, detailed description of the invention
The present invention will be further described with reference to the following detailed description:
the utility model provides an environment-friendly experimental apparatus of copper and dilute nitric acid reaction which the main characterized in that: the novel oxygen-free air-conditioning device comprises an air bag (1) filled with nitrogen, a first air duct (2), a latex tube (3), a spring clamp (4), a second air duct (5), a first single-hole rubber plug (6), a hard glass tube (7) which is provided with a groove in a copper sheet (8) and provided with two holes dug on the wall opposite to the groove, a second single-hole rubber plug (9), a rubber head dropper (10) sucked with dilute nitric acid, an iron stand table (11) provided with the iron clamp, an injector (12) filled with oxygen, a rubber plug (13), a third single-hole rubber plug (14), a third air duct (15) and a beaker (16) filled with a sodium hydroxide solution.
A hard glass tube (7) which is provided with a groove in a copper sheet (8) and is dug with two holes on the wall at the opposite side of the groove is horizontally fixed on an iron support (11) with an iron clamp. A second single-hole rubber plug (9) with a rubber dropper (10) is used for tightly plugging a hole on the wall right above the groove of the hard glass tube (7), and a rubber plug (13) with an injector (12) is used for tightly plugging another hole on the wall of the hard glass tube (7). A third single-hole rubber plug (14) with a third air duct (15) is tightly plugged with a hard glass tube (7) right end tube opening which is provided with a groove in a copper sheet (8) and provided with two holes dug in the wall opposite to the groove, and a first single-hole rubber plug (6) with a second air duct (5) is tightly plugged with a hard glass tube (7) left end tube opening which is provided with a groove in a copper sheet (8) and provided with two holes dug in the wall opposite to the groove. The latex tube (3) with the spring clamp (4) is connected with the second air duct (5) at the outer end of the first single-hole rubber plug (6) and one end of the first air duct (2), and the other end of the first air duct (2) is connected with the air bag (1) filled with nitrogen. The end of the third air duct (15) extends into a beaker (16) filled with sodium hydroxide solution.
The utility model discloses a use method: firing a groove on the wall of the hard glass tube (7) by using an alcohol blast lamp at a high temperature, and drilling two holes on the wall of the hard glass tube (7) on the opposite side of the groove by using a glass drill, wherein one hole is positioned on the right opposite side of the groove. The instrument was connected and the air tightness of the device was checked. The copper sheet (8) is placed in a groove of the hard glass tube (7), and the hard glass tube (7) which is provided with the groove in the copper sheet (8) and is dug with two holes on the wall opposite to the groove is horizontally fixed on an iron stand (11) by an iron clamp. Inserting the rubber head dropper (10) absorbed with the dilute nitric acid on the second single-hole rubber plug (9), plugging the second single-hole rubber plug (9) with the rubber head dropper (10) on the hole on the wall right above the groove of the hard glass tube (7), puncturing the syringe (12) filled with oxygen through the rubber plug (13), and plugging the other hole on the wall of the hard glass tube (7) by using the rubber plug (13) with the syringe (12). Inserting a third air duct (15) on a third single-hole rubber plug (14), plugging a hard glass tube (7) right end tube opening which is provided with a groove in a copper sheet (8) and provided with two holes on the wall opposite to the groove by using the third single-hole rubber plug (14) with the third air duct (15), inserting a second air duct (5) on a first single-hole rubber plug (6), plugging a hard glass tube (7) left end tube opening which is provided with a groove in a copper sheet (8) and provided with two holes on the wall opposite to the groove by using a first single-hole rubber plug (6) with the second air duct (5). Then a latex tube (3) with a spring clamp (4) is connected with a second air duct (5) at the outer end of the first single-hole rubber plug (6) and one end of the first air duct (2), and the other end of the first air duct (2) is connected with an air bag (1) filled with nitrogen. The end of the third gas-guide tube (15) is extended into a beaker (16) filled with sodium hydroxide solution. During the experiment, the spring clamp (4) is opened firstly, the air bag (1) filled with nitrogen is extruded, the nitrogen is blown into the hard glass tube (7), and the spring clamp (4) is clamped after the air in the hard glass tube (7) is removed. A rubber head dropper (10) is extruded to drop a proper amount of dilute nitric acid into a groove of a hard glass tube (7), so that a large number of bubbles are generated on the surface of a copper sheet (8), and the copper sheet (8) reacts with the dilute nitric acid to generate colorless gas. Then, the syringe (12) is pushed slightly to inject oxygen into the hard glass tube (7), and the gas in the hard glass tube (7) is seen to turn reddish brown due to the reaction of the oxygen and nitric oxide in the hard glass tube (7) to generate reddish brown nitrogen dioxide gas. After the experiment is finished, the spring clamp (4) is opened, the air bag (1) filled with nitrogen is extruded, reddish brown nitrogen dioxide gas in the hard glass tube (7) is blown into the beaker (16) filled with sodium hydroxide solution by using the nitrogen, and the nitrogen dioxide gas is absorbed by the sodium hydroxide solution, so that the environmental pollution is reduced. The utility model has the advantages that: safe and environment-friendly, and saves medicines; the phenomenon is obvious, and colorless gas is generated by the reaction of copper and dilute nitric acid; the device is not only suitable for teachers to do demonstration experiments, but also suitable for students to do grouping experiments.
Claims (1)
1. The utility model provides an environment-friendly experimental apparatus of copper and dilute nitric acid reaction which characterized by: the device consists of an air bag (1) filled with nitrogen, a first air duct (2), a latex tube (3), a spring clamp (4), a second air duct (5), a first single-hole rubber plug (6), a hard glass tube (7) which is provided with a copper sheet (8) and is provided with a groove and two holes dug on the wall opposite to the groove, a second single-hole rubber plug (9), a rubber head dropper (10) filled with dilute nitric acid, an iron stand platform (11) with the iron clamp, an injector (12) filled with oxygen, a rubber plug (13), a third single-hole rubber plug (14), a third air duct (15) and a beaker (16) filled with sodium hydroxide solution, wherein the hard glass tube (7) which is provided with the copper sheet (8) and is provided with the groove and two holes dug on the wall opposite to the groove is horizontally fixed on the iron stand platform (11) with the iron clamp, the second single-hole rubber plug (9) with the rubber head dropper (10) is tightly plugged in the hole on the wall right above the groove of the hard, the rubber stopper (13) with the injector (12) tightly plugs another hole on the wall of the hard glass tube (7), the third single-hole rubber stopper (14) with the third air duct (15) tightly plugs the right end orifice of the hard glass tube (7) which is provided with a copper sheet (8) and a groove, and two holes are dug on the wall opposite to the groove, the first single-hole rubber stopper (6) with the second air duct (5) tightly plugs the left end orifice of the hard glass tube (7) which is provided with a groove in the copper sheet (8) and two holes on the wall opposite to the groove, the latex tube (3) with the spring clamp (4) is connected with the second air duct (5) at the outer end of the first single-hole rubber stopper (6) and one end of the first air duct (2), the other end of the first air duct (2) is connected with the air bag (1) filled with nitrogen, and the tail end of the third air duct (15) extends into the beaker (16) filled with sodium hydroxide solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920498385.7U CN209879942U (en) | 2019-04-14 | 2019-04-14 | Environment-friendly experimental device for copper and dilute nitric acid reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920498385.7U CN209879942U (en) | 2019-04-14 | 2019-04-14 | Environment-friendly experimental device for copper and dilute nitric acid reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209879942U true CN209879942U (en) | 2019-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920498385.7U Expired - Fee Related CN209879942U (en) | 2019-04-14 | 2019-04-14 | Environment-friendly experimental device for copper and dilute nitric acid reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209879942U (en) |
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2019
- 2019-04-14 CN CN201920498385.7U patent/CN209879942U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| 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: 20191231 Termination date: 20210414 |