First slide

Solubility product(KSP)

Question

$K_{sp} of AgCl is 1 \times 10^{- 10}$ . Its solubility in 0.1 M KNO₃will be:

Moderate

A

$10^{- 5} moles/litre$
B

$> 10^{- 5} moles/litre$
C

$< 10^{- 5} moles/litre$
D

None of these

Solution

AgCl $\to$ Ag⁺ + Cl^-
K_sp =S² =10^-10
S = 10^-5
${KNO}_{3}$ $\to$ $K^{+}$ + ${NO}_{3}^{-}$
There are no common ions the addition of KNO₃ has no effect over solubility of AgCl so solubility =10^-5

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