11th Class Chemistry Equilibrium Question Bank 11th CBSE Chemistry Ionic Equilibrium

  • question_answer Through a solution containing \[C{{u}^{2+}}\] and \[N{{i}^{2+}},\,{{H}_{2}}S\] gas is passed after adding dil \[HCl,\] which will precipitate out and why?


                    \[C{{u}^{2+}}\] will precipitate out because in the acidic medium, only ionic product \[[C{{u}^{2+}}]\,[{{S}^{2-}}]\] exceeds the solubility product of CuS.

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