CN214955586U

CN214955586U - Ammonium ion and ammonia gas property tester

Info

Publication number: CN214955586U
Application number: CN202121291921.XU
Authority: CN
Inventors: 刘琴; 宿宝林
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-11-30
Anticipated expiration: 2031-06-10

Abstract

The utility model discloses an ammonium ion and ammonia nature inspection appearance, including the iron stand platform, be provided with the plastic bottle on the iron stand platform, spherical drying tube is installed to the plastic bottle lower extreme, has laid verifying attachment in the plastic bottle, has laid the erlenmeyer flask on one side of the plastic bottle, and the erlenmeyer flask passes through pipe and plastic bottle intercommunication, the utility model discloses simple structure, experimental phenomenon are obvious, vivid, draw materials easily, environmental protection economy, easily popularization, realized the inspection integration of ammonium ion inspection and ammonia nature, both be fit for the teacher demonstration, also can be used for grouping the experiment, can arouse student's the enthusiasm of learning greatly simultaneously and explore the spirit.

Description

Ammonium ion and ammonia gas property tester

Technical Field

The utility model relates to a chemistry teaching aid and learning aid are an ammonium ion and ammonia nature inspection appearance particularly.

Background

The chemical experiment is an important method for students to understand and research natural laws, is the basis of the whole chemical teaching, is a main way for cultivating the practical operation and thinking ability of the students, is an effective means for helping the students to understand the basic concept and basic principle of chemistry, and is the basis, precondition and guarantee of the leading-edge position and basic education reform of quality education and innovation education.

Because the chemical experiment is carried out in combination with the general technical practice, the teaching of the general technology can be creatively carried out, and the experimental teaching of a new chemical course can be promoted; the self-made teaching aid is designed to cultivate the innovation capability of students and improve the comprehensive literacy of the students, and the self-made various teaching aids can supplement the defects of the existing instruments, so that the teaching aid integrates the general technical practice with the innovation of chemistry and chemical experiments, embodies the design concept, green chemical concept and chemical knowledge principle of the general technology, and really reaches the standard of easy acquisition of materials, simple manufacture, environmental protection and easy popularization. The teaching aid is suitable for students to make by hands so as to cultivate the innovation and comprehensive practice capability of the students.

The ammonium ion inspection is an important demonstration experiment of middle school chemistry, ammonia is generated or ammonium salt and hydrated lime are mixed and ground to generate ammonia when heating through ammonium salt and alkali solution mixture in the teaching, ammonia can make moist phenolphthalein test paper turn red, the ammonium ion is inspected with this nature of ammonia usually, can not put the inspection of inspecting ammonium ion and ammonia nature together and accomplish, the easy polluted environment of ammonia that generates in the traditional experiment simultaneously, difficult processing, just so cause the teaching effect of teacher to discount greatly.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a simple structure, experimental phenomenon is obvious, vivid, draw materials easily, environmental protection economy, easily popularization, both is fit for the teacher and demonstrates, also can be used for grouping the experiment, can arouse student's the enthusiasm of study and explore the spiritual ammonium ion and ammonia nature inspection appearance simultaneously greatly.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides an ammonium ion and ammonia nature inspection appearance, includes the iron stand platform, is provided with the plastic bottle on the iron stand platform, and spherical drying tube is installed to the plastic bottle lower extreme, has laid verifying attachment in the plastic bottle, and the erlenmeyer flask has been laid to plastic bottle one side, and the erlenmeyer flask passes through pipe and plastic bottle intercommunication.

The following is the utility model discloses to above-mentioned technical scheme's further optimization:

the lower end of the plastic bottle is plugged with a rubber plug, and the upper end of the spherical drying tube penetrates through the upper rubber plug and extends into the plastic bottle.

Further optimization: cotton dipped with sulfuric acid is distributed in the bulb of the spherical drying tube, and filter paper is pasted in the glass tube at the lower part of the bulb of the spherical drying tube.

Further optimization: the inspection device comprises an iron wire movably arranged in the plastic bottle, and the bottom end of the iron wire is inserted into the rubber plug of the plastic bottle opening.

Further optimization: first wet cotton, first dry cotton, second dry cotton and second wet cotton are sequentially arranged on the iron wires from top to bottom at equal intervals.

Further optimization: the first wet cotton, the first dry cotton, the second dry cotton and the second wet cotton are dipped with phenolphthalein.

Further optimization: the mouth of the conical bottle is blocked by a rubber plug.

Further optimization: one end of the guide pipe penetrates through the rubber plug at the bottle mouth of the conical bottle and extends into the conical bottle, and the other end of the guide pipe penetrates through the side wall of the plastic bottle and extends to the middle of the first dry cotton and the second dry cotton in the plastic bottle.

The above technical scheme is adopted in the utility model, when using, at first inspect the gas tightness of a whole set of device, secondly add ammonium nitrogen fertilizer and sodium hydroxide solid and a small amount of sodium hydroxide solution or a small amount of distilled water in the erlenmeyer flask.

Slightly shaking the conical flask after sealing the conical flask, so that reactants in the conical flask are fully contacted, and at the moment, water is contacted with sodium hydroxide solid to release a large amount of heat, thereby accelerating the reaction of ammonium salt and sodium hydroxide, wherein the reaction formula is 2NaOH + (NH)₄)₂SO₄=Na₂SO₄+2NH₃↑+2H₂O, thereby promoting the generation of ammonia gas and enhancing the detection effect of ammonium ions.

The ammonia that produces in the erlenmeyer flask passes through in the pipe gets into the plastic bottle to the ammonia that produces in making the erlenmeyer flask directly gets into the plastic bottle, thereby can not leak in the air, prevented the pollution of ammonia to the environment.

The discoloration of different cotton in the inspection device in the plastic bottle was observed, and it was observed that the first wetted cotton turned red first, then the second wetted cotton turned red, and the others did not change color.

The first wet cotton turns red firstly, and the second wet cotton turns red later, so that the property that the density of ammonia gas is smaller than that of air is verified; the wet cotton turns red, the dry cotton does not turn red, and the reaction of ammonia gas and water is verified.

The ammonia gas in the plastic bottle gradually enters the bulb of the spherical drying tube through the thin end of the drying tube along with the increase of the amount.

The ammonia gas enters the lower glass tube of the spherical drying tube after reacting with the sulfuric acid in the spherical bubble of the spherical drying tube.

And observing the color change condition of the filter paper in the glass tube at the lower part of the spherical drying tube, wherein the filter paper does not change color, and verifying that the ammonia gas can react with the acid.

The above technical scheme is adopted in the utility model, simple structure, experimental phenomenon are obvious, vivid, draw materials easily, environmental protection economy, easily promote, realized the inspection integration of ammonium ion inspection and ammonia nature, both are fit for the teacher and demonstrate, also can be used for grouping the experiment, can arouse student's the enthusiasm of study and explore the spirit greatly simultaneously.

The present invention will be further explained with reference to the drawings and examples.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the embodiment of the present invention.

In the figure: 1-iron stand table; 2-plastic bottle; 3-a conical flask; 4-a catheter; 5-a spherical drying tube; 6-filter paper; 7-cotton; 8-a testing device; 81-iron wire; 82-first wet cotton; 83-first dry cotton; 84-second dried cotton; 85-second wet cotton.

Detailed Description

Example (b): referring to the attached drawing 1, the ammonium ion and ammonia gas property tester comprises an iron stand 1, wherein a plastic bottle 2 is arranged on the iron stand 1, a spherical drying tube 5 is installed at the lower end of the plastic bottle 2, a testing device 8 is arranged in the plastic bottle 2, a conical bottle 3 is arranged on one side of the plastic bottle 2, and the conical bottle 3 is communicated with the plastic bottle 2 through a conduit 4.

The bottle mouth at the lower end of the plastic bottle 2 is blocked by a rubber plug, and the upper end of the spherical drying tube 5 penetrates through the upper rubber plug and extends into the plastic bottle 2.

Cotton 7 dipped with sulfuric acid is arranged in the bulb of the spherical drying tube 5, and filter paper 6 dipped with phenolphthalein is pasted in the glass tube at the lower part of the spherical drying tube bulb 5.

The inspection device 8 comprises an iron wire 81 movably arranged in the plastic bottle 2, and the bottom end of the iron wire 81 is inserted into the rubber plug of the plastic bottle 2.

The iron wire 81 is sequentially provided with a first wet cotton 82, a first dry cotton 83, a second dry cotton 84 and a second wet cotton 85 from top to bottom at equal intervals.

The first wet cotton 82, the first dry cotton 83, the second dry cotton 84 and the second wet cotton 85 are dipped with phenolphthalein.

The mouth of the conical bottle 3 is blocked by a rubber plug,

one end of the conduit 4 penetrates through the rubber plug at the bottle mouth of the conical bottle 3 and extends into the conical bottle 3, and the other end penetrates through the side wall of the plastic bottle 2 and extends to the middle of the first dry cotton 83 and the second dry cotton 84 in the plastic bottle 2.

The utility model discloses when specifically using, at first inspect the gas tightness of whole equipment, later add the erlenmeyer flask 3 with ammonium nitrogen fertilizer and sodium hydroxide solid to pour into a small amount of sodium hydroxide solution or a small amount of distilled water.

The flask 3 was sealed and then the flask 3 was gently shaken to bring the reactants into full contact.

At this time, water contacts with solid sodium hydroxide to release a large amount of heat, and the reaction of ammonium salt and sodium hydroxide is accelerated, and the reaction formula is 2NaOH + (NH)₄)₂SO₄=Na₂SO₄+2NH₃↑+2H₂O, thereby promoting the generation of ammonia gas and enhancing the detection effect of ammonium ions.

The ammonia that produces in the erlenmeyer flask 3 passes through in pipe 4 gets into plastic bottle 2 to make the ammonia that produces in the erlenmeyer flask 3 directly get into in the plastic bottle 2, thereby can not leak in the air, prevented the pollution of ammonia to the environment.

The different cottons in the inspection device 8 inside the plastic bottle 2 were observed to change color, and it was observed that the first wetted cotton 82 first turned red, and then the second wetted cotton 85 turned red, and the others did not change color.

The first wet cotton 82 turns red first, and the second wet cotton 85 turns red later, so that the property that the density of ammonia gas is smaller than that of air is verified; the wet cotton turns red, the dry cotton does not turn red, and the reaction of ammonia gas and water is verified.

The ammonia gas in the plastic bottle 2 gradually enters the bulb of the spherical drying tube 5 through the thin end of the drying tube along with the increase of the amount.

The ammonia enters the lower glass tube of the spherical drying tube 5 after reacting with the sulfuric acid in the spherical bubble of the spherical drying tube 5, the color change condition of the filter paper 6 in the lower glass tube of the spherical drying tube 5 is observed, the filter paper 6 does not change color, the ammonia can react with the acid, the sulfuric acid absorbs the ammonia, and the pollution of the ammonia to the environment is prevented.

The above description is only a part of the embodiments of the present invention, and the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides an ammonium ion and ammonia nature inspection appearance, includes iron stand platform (1), its characterized in that: the iron support is characterized in that a plastic bottle (2) is arranged on the iron support (1), a spherical drying pipe (5) is installed at the lower end of the plastic bottle (2), an inspection device (8) is arranged in the plastic bottle (2), a conical bottle (3) is arranged on one side of the plastic bottle (2), and the conical bottle (3) is communicated with the plastic bottle (2) through a guide pipe (4).

2. The ammonium ion and ammonia gas detector according to claim 1, wherein: the lower end of the plastic bottle (2) is plugged by a rubber plug, and the upper end of the spherical drying tube (5) penetrates through the upper rubber plug and extends into the plastic bottle (2).

3. The ammonium ion and ammonia gas detector according to claim 2, wherein: cotton (7) dipped with sulfuric acid is arranged in the bulb of the spherical drying tube (5), and filter paper (6) dipped with phenolphthalein is pasted in the glass tube at the lower part of the bulb of the spherical drying tube.

4. The ammonium ion and ammonia gas detector according to claim 3, wherein: the inspection device (8) comprises an iron wire (81) movably arranged in the plastic bottle (2), and the bottom end of the iron wire (81) is inserted into the rubber plug at the opening of the plastic bottle (2).

5. The apparatus according to claim 4, wherein the apparatus comprises: the iron wire (81) is sequentially provided with first wet cotton (82), first dry cotton (83), second dry cotton (84) and second wet cotton (85) at equal intervals from top to bottom.

6. The ammonium ion and ammonia gas quality tester according to claim 5, wherein: the first wet cotton (82), the first dry cotton (83), the second dry cotton (84) and the second wet cotton (85) are dipped with phenolphthalein.

7. The apparatus according to claim 6, wherein the apparatus comprises: the mouth of the conical bottle (3) is blocked by a rubber plug.

8. The apparatus according to claim 7, wherein the apparatus comprises: one end of the guide pipe (4) penetrates through the rubber plug at the bottle mouth of the conical bottle (3) and extends into the conical bottle (3), and the other end of the guide pipe penetrates through the side wall of the plastic bottle (2) and extends to the middle of first dry cotton (83) and second dry cotton (84) in the plastic bottle (2).