11th Class Chemistry Equilibrium / साम्यावस्था

  • question_answer 1)
      Assertion (A): The ionisation of hydrogen sulphide in water is low in the presence of hydrochloric acid. Reason (R): Hydrogen sulphide is a weak acid.

    Answer:

      (b) lonisation of \[{{H}_{2}}S\] in water is suppressed in presence of hydrochloric acid due to common ion effect. \[{{H}_{2}}S\underset{{}}{\leftrightarrows}{{H}^{+}}+H{{S}^{-}}\] \[HCl(aq)\underset{{}}{\leftrightarrows}{{H}^{+}}+C{{l}^{-}}\] \[{{H}_{2}}S\]is a weak acid.


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