Equilibrium Question 198
Question: The solubility product of a sparingly soluble salt $ AB $ at room temperature is $ 1.21\times {10^{-6}} $ . Its molar solubility is [CPMT 1987; MP PET 2001]
Options:
A) $ 1.21\times {10^{-6}} $
B) $ 1.21\times {10^{-3}} $
C) $ 1.1\times {10^{-4}} $
D) $ 1.1\times {10^{-4}} $
Show Answer
Answer:
Correct Answer: D
Solution:
AB is a binary electrolyte. $ S=\sqrt{K _{sp}}=\sqrt{1.21\times {10^{-6}}}=1.1\times {10^{-3}}M $
