Q.

A solution contains 0.05 M of each of NaCl and Na2CrO4. Solid AgNO3 is gradually added to it.

Which of the following fats is true?

Given : KSP(AgCl) = 1.7 × 10-10M2 and SP(AgCrO4) = 1.1 × 10-12

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a

Cl ions are precipitated first 

b

CrO42- ions are precipitated first

c

Solubility of  Ag2CrO4 is > AgCl (in water when they dissolved separately)

d

Both Cl and  CrO42 ions are precipitated together

answer is A, D.

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Detailed Solution

When ionic product exceed solubility product then precipitation take place 

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