Find the solubility of PbI_2 if its solubilit | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) For $PbI_2$,the dissociation equilibrium is: $PbI_{2(s)} \rightleftharpoons Pb^{2+}_{(aq)} + 2I^{-}_{(aq)}$ Let the solubility be $S$. Then $[Pb^{

Vedclass · Accepted Answer

$1.21 	imes 10^{-3} \ mol \ L^{-1}$

Vedclass · Answer

(A) For $PbI_2$,the dissociation equilibrium is: $PbI_{2(s)} ightleftharpoons Pb^{2+}_{(aq)} + 2I^{-}_{(aq)}$ Let the solubility be $S$. Then $[Pb^{2+}] = S$ and $[I^-] = 2S$. The solubility product expression is: $K_{sp} = [Pb^{2+}][I^-]^2 = (S)(2S)^2 = 4S^3$ Given $K_{sp} = 7.0 	imes 10^{-9}$. $4S^3 = 7.0 	imes 10^{-9}$ $S^3 = \frac{7.0 	imes 10^{-9}}{4} = 1.75 	imes 10^{-9}$ $S = \sqrt[3]{1.75 	imes 10^{-9}} = 1.205 	imes 10^{-3} \ mol \ L^{-1} \approx 1.21 	imes 10^{-3} \ mol \ L^{-1}$.

Find the solubility of $PbI_2$ if its solubility product is $7.0 \times 10^{-9}$.

Similar Questions

Which of the following pairs of ions would be expected to form a precipitate when their solutions are mixed?

What is the value of $K_{sp}$ for a saturated solution of $Ba(OH)_2$ having $pH = 12$?

What is the solubility product $(K_{sp})$ of a binary sparingly soluble salt $BA$ if a $100 \text{ mL}$ saturated solution of the salt contains $10^{-4} \text{ moles}$ at room temperature?

Which of the following has the minimum solubility in water?

$A$ precipitate of $AgCl$ is formed when equal volumes of the following are mixed. [$K_{sp}$ for $AgCl = 10^{-10}$]

Vedclass Test Series

Exam Paper Generator

Online Exam Module