# The solubility product of a soluble salt A_(x)B_(y) is given by : K_(sp)=[A^(y+)]^(z)[B^(x-)]^(y). As soon as prodcut of concentration of A^(y+)

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The solubility product of a soluble salt A_(x)B_(y) is given by : K_(sp)=[A^(y+)]^(z)[B^(x-)]^(y). As soon as prodcut of concentration of A^(y+) and B_(x-). Becomes more than its K_(sp), the salt starts precipitation. It may practically be noticed that AgCI is more soluble in water and its solubility decreases dramatically in 0.1m NaCI or 0.1 m AgNO_(3) solution. It can be concluded that in presence of a common ion the solubility of salt decreases.
Equal volumes of two solutions are mixed. The one in which CaSO_(4)(K_(sp)=2.4xx10^(-5)) is precipitated is :
A. 0.02MCaCI_(2)+0.0004MNa_(2)SO_(4)
B. 0.01MCaCI_(2)+0.0004MNa_(2)SO_(4)
C. 0.02MCaCI_(2)+0.0002MNa_(2)SO_(4)
D. 0.03MCaCI_(2)+0.0002MNa_(2)SO_(4)

## 1 Answer

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Correct Answer - d

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