Question

dry HCLgas does not change the colour of dry litmus paper why​

Answer 1

Answer:

Dry HCl does not change the colour of litmus paper because water is required for the formation of hydronium ions which is responsible for the colour change of litmus paper. Since there is no water in this case, the formation of hydronium ions won't take place and no colour change would be observed.

Answer 2

Answer:

dry HCL GAS CAN NOT CHANGE THE COLOR OF LITMUS PAPER BECAUSE A SUBSTANCE CAN SHOW ACIDIC CHARACHER ONLY IN WATER