Question

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

Answer 1

Dear student

As we Know, the acidic property of an acid is due to the liberation of H⁺ ions in its solution. Here, as HCL is dry, it will not be able to liberate H⁺ ions so it will not be able show acidic characters.

That is why dry HCL does not changes the colour of blue litmus paper into red.

Regards