Question

Increasing order of solubility of AgCl in:

• (i) H₂O
• (ii) 1M NaCl (aq)
• (iii) 1M CaCl₂ (aq)
• (iv) 1M NaNO₃ (aq)

• A. CaCl₂<NaCl<H₂O<NaNO₃
• B. CaCl₂>H₂O>NaCl>NaNO₃
• C. CaCl₂>NaCl>H₂O<NaNO₃
• D. CaCl₂<NaCl<H₂O>NaNO₃

Hint:

In solubility problems, remember the effect of the common ion on solubility. The presence of ions like Na^{+ and Cl^{- from NaCl or CaCl\textsubscript{2 will generally decrease the solubility of AgCl due to the common ion effect. Non-electrolytes like NaNO\textsubscript{3 have minimal effect on solubility.