Q. 34.3( 195 Votes )

Why does dry HCl

Answer :

  • The colour of litmus paper changes only in the presence of ions like hydrogen (H+) or hydronium (H3O+) ions.
  • HCl can produce these ions only in the form of an aqueous solution.
  • Hence dry HCl gas does not change the colour of dry litmus paper.

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