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NEET levelSingle correct optionDifficulty 1 of 3ia170

$K_{s p}$ of $AgCl$ is $1.0 \times 1 0^{- 10}$ . Its solubility in $0.1 M$ $NaCl$ solution is

A $1.0 \times 1 0^{- 11} M$
B $1.0 \times 1 0^{- 10} M$
C $1.0 \times 1 0^{- 5} M$
D $1.0 \times 1 0^{- 9} M$

Answer: D

With the common ion,

[Cl X^{-}] \approx 0.1 M

, so

s = [Ag X^{+}] = K_{s p} /0.1 = 1 0^{- 9} M

.

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