Equilibrium Question 215

Question: The precipitate of CaF2

(Ksp=1.7×10−10) is obtained when equal volumes of the following are mixed [IIT 1992; UPSEAT 2000]

Options:

A) 10−4M,Ca2++10−4M,F−

B) 10−2M,Ca2++10−3M,F−

C) Both

D) None of these

Show Answer

Answer:

Correct Answer: B

Solution:

When ionic product is greater than Ksp then precipitation occur Ksp<10−2MCa2++10−3MF−

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