Assertion (A): Addition of `Ag^(o+)` ions to a mixture of aqueous `NaCI` and `NaBr` solution will first precipitate `AgBr` rather than `AgCI`.
Reason (R) : `K_(sp) AgCI lt K_(sp) of AgBr`.

Options

A. If both (A) and (R) are correc, and (R) is the correct explanation of (A).
B. If both (A) and (R) are correct but (R) is not the correct explanation of (A).
C. If (A) is correct, but (R) is incorrect.
D. If (A) is incorrect, but (R) is correct.

Answer

C

Explanation

`(A)` is correct but `(R)` is false.
Correct `(R): K_(sp)` of `AgCI gt K_(sp)` of `AgBr` compounds with lower `K_(sp)` is precipitated first. Also, for precipiation `Q_(sp)` should be grater than `K_(sp)`.