Geo-Scientist Prelims 2022 Chemistry Q77: The specific conductance of a saturated solution of the sparingly…

The specific conductance of a saturated solution of the sparingly soluble salt AgCl in water at 25 °C, after subtracting the specific conductance of pure water, is 1·82 × 10⁻⁴ Ω⁻¹ m⁻¹. What will be the approximate value of solubility of AgCl at this temperature, given that the molar conductance of AgCl at infinite dilution is 1·38 × 10⁻² Ω⁻¹ m² mol⁻¹?

1. (a) 1·32 × 10⁻² mol m⁻³
2. (b) 1·43 × 10⁻⁵ mol m⁻³
3. (c) 2·52 × 10⁻⁶ Ω⁻² m mol
4. (d) 2·52 × 10⁻¹⁰ Ω⁻² m mol