Question

Why does dry Hcl does not change the dry litmus paper colour

Answer 1

dry HCl canbot change dry litmus paper because dry HCl gas has no acidic properties .

only when HCl is mixes with water , hydronium ions are produced which gives it the acidic property....

HOPE THIS HELPED

Answer 2

  in aqueous solution Dry HCl not show acidic character because it  can not give  H+  ion  so it will not change litmus colour