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AgCl((s))is sparingly soluble salt, AgC...

`AgCl_((s))`is sparingly soluble salt, `AgCl_((s)) hArr Ag_((aq))^(+) + Cl_((g))^(-)` there is

A

Increase in solubility if `NH_(3(aq))` is added

B

Increase in solubilitu it NaCl or `AgNO_(3)` is added

C

Decrease in solubility if KC! is added

D

Decrease in solubility if `H_(2)`O is added

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem regarding the solubility of AgCl in the presence of different substances, we need to analyze the effects of each option provided. Here's a step-by-step breakdown of the solution: ### Step 1: Understand the Dissolution of AgCl AgCl is a sparingly soluble salt that can dissociate into its ions in solution: \[ \text{AgCl}_{(s)} \rightleftharpoons \text{Ag}^+_{(aq)} + \text{Cl}^-_{(aq)} \] ### Step 2: Analyze the Effect of NH3 When ammonia (NH3) is added to the solution, it can form a complex with Ag+ ions: \[ \text{Ag}^+ + 2\text{NH}_3 \rightleftharpoons \text{[Ag(NH}_3\text{)]}^+ \] This complex formation effectively removes Ag+ ions from the solution, shifting the equilibrium to the right, which increases the solubility of AgCl. ### Step 3: Analyze the Effect of NH4Cl or AgNO3 Adding NH4Cl or AgNO3 introduces more Cl- or Ag+ ions into the solution, respectively. According to Le Chatelier's principle, the addition of these ions will shift the equilibrium to the left, decreasing the solubility of AgCl. ### Step 4: Analyze the Effect of KCl Similar to NH4Cl, adding KCl increases the concentration of Cl- ions in the solution. This will also shift the equilibrium to the left, resulting in decreased solubility of AgCl. ### Step 5: Analyze the Effect of H2O Adding more water (H2O) to the system does not change the concentration of ions in a significant way that would affect the solubility of AgCl. Therefore, the solubility remains relatively unchanged. ### Conclusion Based on the analysis: - **Option A** (Increase in solubility if NH3 is added) is correct. - **Option B** (Decrease in solubility if NH4Cl or AgNO3 is added) is correct. - **Option C** (Decrease in solubility if KCl is added) is correct. - **Option D** (Decrease in solubility if H2O is added) is incorrect as it does not significantly affect solubility. ### Final Answer The correct option is **A**: Increase in solubility if NH3 is added. ---
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