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Sunday, 31 May 2015

Why does dry HCl gas not change the colour of dry litmus paper

Why does dry HCl gas not change the colour of dry litmus paper

Answer: Dry HCl gas does not form H+ions. It does not show its acidic character. When in the aqueous solution, an acid ionizes to form H+ions. In this case, neither HCl is in an aqueous form nor the litmus paper is wet, therefore, the colour of the litmus paper does not change.

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