JEE Advanced2011ChemistryIonic EquilibriumActual
In 1 ~L saturated solution of AgCl [K_ sp AgCl =1.6 10⁻¹⁰ ], 0.1 mole 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
Correct answer
0
Step-by-step solution
It is a case of simultaneous solubility of salts with a common ion. Here solubility product of CuCl is much greater than that of AgCl , it can be assumed that Cl ⁻ in solution comes mainly from CuCl . [ Cl ⁻ ]= K_ s p ( CuCl ) =10⁻³ M Now for AgCl : K_ s p =1.6 10⁻¹⁰= [ Ag ⁺ ] [ Cl ⁻ ]= [ Ag ⁺ ] 10⁻³ [ Ag ⁺ ]=1.6 10⁻⁷