. Which of the following statements are correct?
Ksp of CoS is 4 × 10–12 M2A.
(I) Solubility of CoS is 2 × 10–6 m/L
(II) Solubility of CoS is greater than 2 × 10–6 m/L because of the hydrolysis of S2-
(III) Solubility of CoS is greater in an acidic solution than that in pure water
A. I and III
B. I, III and IV
C. I and IV
Best Answer
Ans: B
Sol: Ksp values are experimentally determined. So, they take into account extra solubility due to hydrolysis.
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