Question

why does dry HCL gas not change the colour of the dry Litmus Paper​

Answer 1

Answer:

Because only aqueous solution of HCl will dissociate into its ions.

Since, HCl is not in aqueous solution and litmus paper is not wet, It does not show any result.

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Answer 2

Since Dry HCL doesn't contain water therefore It doesn't show the acidic nature because acids need water to release hydronium ions .. It is the hydronium ions that show the acidic nature. Therefore dry HCL doesnt change the colour of litmus paper because it doesn'tabe m have hydronium ions.

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