Assertion : Addition of silver ions to a mixture of aqueous sodium chloride and sodium bromide solution will…
Assertion : Addition of silver ions to a mixture of aqueous sodium chloride and sodium bromide solution will first precipitate $\mathrm{AgBr}$ rather than $\mathrm{AgCl}$.
Reason : $K_{sp}$ of $\mathrm{AgCl} < K_{sp}$ of $\mathrm{AgBr}$
both assertion and reason are true and reason is the correct explanation of assertion
both assertion and reason are true but reason is not the correct explanation of assertion
assertion is true but reason is false
both assertion and reason are false.
Solution
$K_{s p}$ of $\mathrm{AgCl} > K_{s p}$ of $\mathrm{AgBr}$.
For the precipitation to occur, its ionic product should exceed solubility product.