1.

Statement-1:Potassium chromate solution in acetic acid precipitates only Ba^(2+) as BaCrO_4 in group V^(th) Statement-2:SrCrO_4 and CaCrO_4 are not precipitated with potassium chromate solution in acetic acid.

Answer»

Statement-1 is True, Statement-2 is True, Statement-2 is a CORRECT EXPLANATION for Statement-1
Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1
Statement-1 is True, Statement-2 is FALSE.
Statement-1 is False, Statement-2 is True.

Solution :`K_(sp)` of `SrCrO_4` and `CaCrO_4` are much higher than `BaCrO_4`. Addition of acetic acid lowers the CONCENTRATION of `CrO_4^(2-)`.Hence `BaCrO_4` is precipitated only because its `K_(sp)` VALUE is lower.


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