CN204884364U

CN204884364U - Experimental device for be used for studying concentrated sulfuric acid exothermic character that absorbs water

Info

Publication number: CN204884364U
Application number: CN201520635082.7U
Authority: CN
Inventors: 杨倩
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-08-22
Filing date: 2015-08-22
Publication date: 2015-12-16
Anticipated expiration: 2025-08-22

Abstract

The utility model provides an experimental device for be used for studying concentrated sulfuric acid exothermic character that absorbs water which characterized in that: including two the same containers, the oral area of the two containers cork of having pegged graft respectively, the trompil is pegged graft respectively on two corks has the same thermometer, the casing of two thermometers is the glass material, the concentrated sulfuric acid has all been dipped in on the vacuole of two thermometers, it has water smoke to fill in one of them container, and it has the gas that does not take place the reaction with the concentrated sulfuric acid to fill in another container. The container is the erlenmeyer flask. The utility model has the advantages of: can observe that the medium temperature acidimeter registration of water environment is quick to rise 10 DEG C - 30 DEG C, and it is unchangeable basically not have the registration of water environment moderate temperature meter, the phenomenon contrast is very obviously directly perceived, has deepened the concentrated sulfuric acid exothermal perceptual knowledge that absorbs water, and is with deep impression, does benefit to and trains the chemical interest of study.

Description

For studying the experimental provision of concentrated sulphuric acid water suction exothermic character

Technical field

The utility model relates to a kind of chemical experimental instrument, especially for the experimental provision of research concentrated sulphuric acid water suction exothermic character.

Background technology

Existing senior middle school chemical teaching material, the water absorptivity of the explanation concentrated sulphuric acid, just theoretical introduction, do not arrange corresponding experiment, cause students not have perceptual knowledge, impression is not dark.

Utility model content

For above-mentioned deficiency, the purpose of this utility model is to provide a kind of experimental provision for studying concentrated sulphuric acid water suction exothermic character.

The technical scheme that the utility model adopts is: a kind of experimental provision for studying concentrated sulphuric acid water suction exothermic character, it is characterized in that: comprise two identical containers, the oral area of described two containers is plugged with cork respectively, perforate on described two corks is also plugged with identical thermometer respectively, the housing of described two temperatures meter is glass material, the vacuole of described two thermometers is all moistened with the concentrated sulphuric acid, be filled with water smoke in one of them container described, in another container, be filled with the gas do not reacted with the concentrated sulphuric acid.

Described container is conical flask.

Usage:

1, thermometer is plugged in cork, adjusts the height of cork relative temperature meter, make when cork is plugged on conical flask, at the bottom of the lower end of thermometer can not touch bottle, observe and record the registration of two thermometers.

2, with water spray in watering can (as family expenses watering can) wherein a conical flask, or directly fill water and repeatedly shake, to increase a bottle humidity; The gas do not reacted with the concentrated sulphuric acid is injected, as oxygen, hydrogen or carbon dioxide etc., to get rid of the steam of the inside as far as possible in another conical flask.

3, dip in the concentrated sulphuric acid at the vacuole position of two thermometers fast, immediately cork is plugged on the oral area of two conical flasks together with thermometer.

4, observe the not number change of two temperatures meter, can find that the registration being inserted in thermometer in water conical flask rises fast; And the thermometer registration (being marked with the gas do not reacted with the concentrated sulphuric acid) in anhydrous conical flask is substantially constant.

The utility model has the advantage of: can be observed thermometer registration in water environment and rise 10 DEG C fast--30 DEG C, and the registration of thermometer is substantially constant in water-less environment, phenomenon contrast is clearly directly perceived, deepen the perceptual knowledge of concentrated sulphuric acid water suction heat release, with deep impression, be beneficial to the interest of cultivating learning chemistry.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

In figure: 1 thermometer, 2 corks, 3 conical flasks, 4 concentrated sulphuric acids, 5 water smokes, 6 gases do not reacted with the concentrated sulphuric acid.

Embodiment

As shown in Figure 1, the oral area of two identical conical flasks 3 is plugged with cork 2 respectively, and perforate on cork 2 is also plugged with identical thermometer 1 respectively, and temperature counts common liquid-filled thermometer, and housing is glass.

During experiment, the interior filling water smoke 5 of conical flask (on the right side of Fig. 1) wherein, the gas that filling oxygen, hydrogen or carbon dioxide etc. do not react with the concentrated sulphuric acid in another conical flask 3, to get rid of the steam in bottle as far as possible; The vacuole of two thermometers is dipped in the upper concentrated sulphuric acid, just can study the water suction exothermic character of the concentrated sulphuric acid.

Claims

1. one kind for study the concentrated sulphuric acid water suction exothermic character experimental provision, it is characterized in that: comprise two identical containers, the oral area of described two containers is plugged with cork respectively, perforate on described two corks is also plugged with identical thermometer respectively, the housing of described two temperatures meter is glass material, the vacuole of described two thermometers is all moistened with the concentrated sulphuric acid, is filled with water smoke in one of them container described, in another container, is filled with the gas do not reacted with the concentrated sulphuric acid.

2., as claimed in claim 1 for studying the experimental provision of concentrated sulphuric acid water suction exothermic character, it is characterized in that: described container is conical flask.