Equilibrium Question 190
Question: The solubility product of $ BaSO_4 $ is $ 1.5\times {10^{-9}}. $ The precipitation in a 0.01 $ MB{a^{2+}} $ solution will start, on adding $ H_2SO_4 $ of concentration [CPMT 1988]
Options:
A) $ {10^{-9}}M $
B) $ {10^{-8}}M $
C) $ {10^{-7}}M $
D) $ {10^{-6}}M $
Show Answer
Answer:
Correct Answer: C
Solution:
$ K _{sp} $ of $ BaSO_4=1.5\times {10^{-9}} $ ; $ B{a^{++}}=0.01M $
$ SO_4^{-,-}=\frac{1.5\times {10^{-9}}}{0.01}=1.5\times {10^{-7}} $
