Question

plsss hlp urgent. pllllls​

Answer 1

Concept :- Acidity of a compound is due to the ability of it to furnish H+ ions. Acid turna blue litmus red.

SOLUTION :-

Dry HCl gas does not give H+ ion.HCl guves H+ ion only in aqueous solution.

Thus, A :- No change ( Since, dry HCl does not give H+ ion )

B :- red (Since, wet itmus makes dry HCl gas aqueous ).