Ionic Equilibrium Question 11

Question 11 - 31 January - Shift 2

At $298 K$, the solubility of silver chloride in water is $1.434 \times 10^{-3} g L^{-1}$. The value of $-\log K _{sp}$ for silver chloride is

(Given mass of $Ag$ is $107.9 g mol^{-1}$ and mass of $Cl$ is $35.5 g mol^{-1}$ )

Show Answer

Answer: (10)

Solution:

Formula: Solubility product

$ \begin{aligned} & AgCl(s) \to Ag^{+}(\text{aq. })+Cl^{-} \text{(aq.) } \\ & K _{sp}=S^{2}=(\frac{1.43}{143.4} \times 10^{-3})^{2}=10^{-10} \\ & -\log K _{sp}=10 \end{aligned} $