Question

12. Why does dry HCl gas not change the colour of the dry
litmus paper?(2)​

Answer 1

Answer:

In case of dry HCl gas, there is no presence of water and so, the dye on litmus paper cannot react with the gas. So, any dry gas will not give any change in the colour of litmus paper.

Answer 2

Answer:

HCL gas doesnot dissociates without water. Acids get dissociated when they are added to water to form H+ ions. so dry hcl gas do not change colour of the dry litmus paper.

Explanation:

Hope this will help u.