Question

Why does HCl in gas form not react with dry litmus paper but when litmus is dipped in water and then brought near to HCl gas it reacts and change its color?

Answer 1

Answer:

dry HCl will not change the colour of dry litmus.

Explanation:

• the HCl gas needs water to decompose into H+ and Cl- ions.
• the H+ ions are responsible for the acidic nature of substances.
• the colour of dry litmus will also not change if there is no moisture...
• hope it helps u.....

Answer 2

Explanation:

HCL doesn't react with dry litmus paper as H+(hydronium ions) are absent.Whereas H+ ions are present in wet litmus paper.hence the above observations are found.