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On addition of increasing amount of AgNO...

On addition of increasing amount of `AgNO_3` to 0.1 M each of NaCl and NaBr in a solution, what % of `Br^-` ion gets precipitated when `Cl^-` ion starts precipitating? `K_(sp)(AgCl)= 1.0 xx 10^(-10), K_(sp)(AgBr)=1xx10^(-13)`

A

0.1

B

0.01

C

99.9

D

99.99

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