In 1 L saturated solution of AgCl [K_ sp (AgCl) = 1.6 10^ -10 ], 0.1 mol of CuCl [K_ sp (CuCl) = 1.0 10^ -6 ] is added. The resultant concentration of Ag^+ in the solution is 1.6 10^ -x . The value of "x" is

JEE Advanced 2011 Chemistry question

In 1 L saturated solution of AgCl [(AgCl) ], 0.1 mol of CuCl [(CuCl) ] is added. The resultant concentration of in the solution is . The value of "x" is

Answer: 7

Solution

CuCl is much more soluble than AgCl, so the chloride concentration is controlled by CuCl. Its solubility: M (0.1 mol added is far more than dissolves, so the solution is

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Question ID VK-025958