Question

Which of the following is most soluble in water ?

• A. $MnS(K_{sp}=8\times {10}^{-37})$
• B. $ZnS(K_{sp}=7\times {10}^{-16})$
• C. $B{i}_2{S}_3(K_{sp}=8\times {10}^{-7})$
• D. $A{g}_3\left(P{O}_4\right)(K_{sp}=1.8\times {10}^{-6})$

Answer 1

Answer: (D)

$A{g}_3\left(P{O}_4\right)(K_{sp}=1.8\times {10}^{-6})$

Compound with higher solubility constant will be more soluble. Among given compounds $A{g}_3\left(P{O}_4\right)(K_{sp}=1.8\times {10}^{-6})$ has the highest solubility constant. So its solubility will be maximum.