Question

Assertion: AgCl is less soluble in aqueous sodium chloride solution than in pure water.

Reason: AgCl dissociates completely and more rapidly than NaCl.

• A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
  
• B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
  
• C. Assertion is true but Reason is false
• D. Assertion is false but Reason is true
• E. Both Assertion and Reason are false

Answer 1

Answer: (C)

Assertion is true but Reason is false

$AgCl\rightleftharpoons A{g}^{+}+C{l}^{-}$
$NaCl\to N{a}^{+}+C{l}^{-}$
Sodium chloride is a strong electrolyte and is completely dissociated. This increases the chloride ion concentration in solution and suppresses the ionization of $AgCl$. Hence, the solubility of $AgCl$ decreases.