Question

Change the colour of litmus paper by dry hcl

Answer 1

Answer:

To change the colour of blue litmus paper to red, there must be a presence of acid. Dry HCl gas is not acidic because water is required for the dissociation of HCl into H+ and Cl-. Therefore, dry HCl gas is not acidic and will not change the colour of dry blue litmus paper.

Answer 2

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ANSWER :

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HCl is acidic only when it is dry or moist. Only during that

condition, it can change the color of blue litmus into red .

Dry HCl is not acidic .

So it cannot change the color of blue litmus .

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