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Chemical reaction demonstration device

A technology of chemical reaction and demonstrator, applied in the field of chemistry teaching aids, can solve the problems of difficult fixing of electrodes, unsatisfactory experimental results, inconvenient glass rod stirring, etc., and achieves accurate and obvious experimental phenomena, fast and accurate conductivity, and experimental results. complete effect

Inactive Publication Date: 2014-05-07
王欣
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In each experiment, the electrode is not easy to fix in the beaker, and it is inconvenient to stir with a glass rod, so it takes time to wait for observation after adding sulfuric acid, and sometimes there is still red in the beaker after the student experiment, which means the experimental result is not ideal

Method used

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  • Chemical reaction demonstration device

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Embodiment Construction

[0008] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0009] Such as figure 1 As shown, the technical solution of the present invention is: a chemical reaction essence demonstrator, including side plate 1, DC power input jack 2, main power switch 3, micro-motor switch 4, carbon rod 5, solution tank 6, electric stirring Glass rod 7, micro motor 8, round hole 9, ammeter 10, base plate 11, characterized in that: the side plate is fixed on the base plate 11, and the side plate 1 is provided with a DC power input jack 2, a main power switch 3, Micro-motor switch 4, ammeter 10, described solution tank 6 is a cuboid, two identical carbon rods 5 are fixed on the solution tank 6 cover, in the middle of solution tank 6, be provided with the electric stirring bar 7 driven by micro-motor 8, so The micro motor 8 is embedded in the middle of the solution tank 6 cover, and the solution tank 6 cover is provided with a circular...

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Abstract

The chemical reaction demonstration device is characterized in that: a side plate (1) is fixed on a bottom plate (11); a direct current power input jack (2), a main power switch (3), a miniature motor switch (4) and an ammeter (10) are arranged on the side plate (1); a solution tank (6) is cuboidal; two carbon rods (5) which are identical are fixed on a cover of the solution tank (6); an electric stirring rod (7) driven by a miniature motor (8) is arranged on the middle part of the solution tank (6); the miniature motor (8) is embedded into the middle part of the cover of the solution tank (6); and a round hole (9) is formed in the cover of the solution tank (6). The chemical reaction demonstration device has the advantages that: the diffusion of ions is accelerated, so that an experimental phenomenon is accurate and remarkable, and an experimental result is perfect; and the electrical conductivity of a solution is quickly and accurately measured; the magnitude of ion concentration is judged, and the reaction process of electrolyte in an aqueous solution is clearly understood.

Description

technical field [0001] The invention relates to teaching aids for chemistry, in particular to a chemical reaction demonstrator. Background technique [0002] At present, the existing known experiments about the reaction essence of sulfuric acid and barium hydroxide continue to use the traditional demonstration experimental device, which consists of student power supply, two identical carbon rods, wires, ammeter, beaker, plastic head dropper and phenolphthalein, sulfuric acid and barium hydroxide solution. In each experiment, the electrode is not easy to fix in the beaker, and it is inconvenient to stir with a glass rod, so it takes time to wait for the phenomenon to be observed after adding sulfuric acid, and sometimes there is still red in the beaker after the student experiment, which means the experimental result is not ideal. Contents of the invention [0003] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a chemical reacti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/24
Inventor 王欣
Owner 王欣
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