Q. Why does dry HCl gas not change the colour of the dry litmus paper?
- No H3O+ ions will be present, litmus changes colour only in the presence of H3O+ ions
- Blue litmus becomes dry in presence of dry HCl gas
- HCl gas acts asa dehydrating agent
- None of the options
Answer: No H3O+ ions will be present, litmus changes colour only in the presence of H3O+ ions
