Question

dry hydrogen chloride gas does not turn blue litmus to red whereas aqueous hydrochloric acid does. why​

Answer 1

Answer:

Explanation:the color of blue of blue litmus paper changes only in the presence of the ions like hydrogen (H+) or hydronium(H3O+) ions. HCl can produce these ion only when in the form of aqueous solution. Hence, dry HCl gas doesn't change the colour of dry litmus paper

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