43. Which of the following equations accurately describes the relationship between the specific cond β Electrochemistry Chemistry Question
Question
43. Which of the following equations accurately describes the relationship between the specific conductance ($\kappa$) of a saturated solution of a sparingly soluble salt and its solubility ($S$ in mol/L)?
Answer: B
π‘ Solution & Explanation
For a sparingly soluble salt, the saturated solution is so dilute it approximates infinite dilution ($\Lambda_m^c \approx \Lambda_m^\circ$). Using the standard formula $\Lambda_m^\circ = (\kappa \times 1000) / M$, and substituting Molarity $M$ with Solubility $S$, rearranging gives $S = (\kappa \times 1000) / \Lambda_m^\circ$.
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