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Solubility Equilibrium | MCQs

Q1: The solubility of AgCl is decreased by adding which of the following?

A. NH₃
B. AgNO₃
C. None of these
D. NaCl

Explanation

Adding NaCl increases the concentration of Cl⁻ ions, which shifts the equilibrium of $AgCl leftrightarrow Ag^+ + Cl^-$ .

This is an example of the common ion effect, which decreases the solubility of a sparingly soluble salt.

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