Q. A litre of solution is saturated with $AgCl$. To this solution if $1.0 \times 10^{- 4}$ mole of solid $NaCl$ is added, what will be the $\lbrack Ag^{+}\rbrack$, assuming no volume change?

A) More
B) Less
C) Equal
D) Zero
Explanation

(b)
According to common ion effect, dissociation of weak electrolyte is further suppressed in presence of strong electrolyte having common ion.
$\therefore\ \ AgCl$ is weak electrolyte and $NaCl$ is strong electrolyte having common anion.
$\therefore$ Solubility as well as concentration of $Ag^{+}\ and\ Cl^{-}$ will decrease.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

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