Explain the use of cork and glass tube in this activity.

Dear student,

This reaction is exothermic and to detect whether the reaction takes place or not we have to do the confirmatory test for the presence of hydrogen gas because when metal zinc reacts with dilute sulphuric acid then hydrogen gas is released. If a cork is not placed then the whole hydrogen gas will escape suddenly because the reaction is too fast. So, cork is placed for preventing the sudden escape of hydrogen gas.

One glass tube is passed through the cork which will help in the slow release of hydrogen gas and we can perform our confirmatory test from this slow release, if we do not place the glass tube between the cork then, it will explode because it is an exothermic reaction and lots of heat is generated, so we need to control this. Hence, a glass tube is used for the slow release of hydrogen gas.


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