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Q.

Statement I : On mixing 500mL of 10–6M Ca2+ ion and 500 mL of 10–6MF-1 ion, the precipitate of CaF2 will be obtained Ksp(CaF2) = 10–18Statement II : If Ksp is more than ionic product, precipitate will be obtained.

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a

Statement I and II are correct

b

Statement I is correct and Statement II is incorrect

c

Statement - I is incorrect and Statement II is correct

d

Both statement - I  and statement - II are False

answer is D.

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Detailed Solution

Let us calculate the ionic product of CaF2KIP=Ca+2F-2=10-6×500100010-6×50010002KIP=18×10-18KIP < Ksp ⇒ more salt can go into the solution therefore, no precipitate will occur.
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