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Why does dry HCl gas not change the colour of the dry litmus paper?

Pawan Prajapati , 3 Years ago
Grade 12
anser 2 Answers
Harshit Singh

Last Activity: 3 Years ago

Dear Student

Dry HCl gas does not release H+ions and hence, the acidic property of gas is not imparted.
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Thanks

KAPADIA DEV

Last Activity: 3 Years ago

We know that the colour of litmus paper is changed by H + ions because of acid.

Dry HCL it does not dissociate to give H+ ions.

Acids dissociate to give ions only in the aqueous solution.

In this HCL is not in aqueous form nor litmus paper is wet, so the colour of litmus paper does not change.

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