question_answer

An aqueous solution of metal chloride \[MC{{l}_{2}}(0.05M)\] is saturated with \[{{H}_{2}}S(0.1M)\] The minimum pH at which metal sulphide \[[{{K}_{sp}}MS=5\times {{10}^{-21}},\,{{K}_{1}}({{H}_{2}}S)={{10}^{-7}},\,{{K}_{2}}({{H}_{2}}S)={{10}^{-14}}]\]

Answer:

1.50