Electrolytic Conductance — Prelims Questions

The resistance of a $0.01\,\text{M}$ solution of an electrolyte was found to be $210,\Omega$ at $298\,\text{K}$. The cell constant is $0.88\,\text{cm}^{-1}$. Calculate the molar conductivity of the solution.

Which of the following statements is INCORRECT regarding electrolytic conductance?

The molar conductivities at infinite dilution for $\text{NaCl}$, $\text{HCl}$, and $\text{CH}_3\text{COONa}$ are $126.4$, $425.9$, and $91.0\,\text{S} \cdot \text{cm}^2 \cdot \text{mol}^{-1}$ respectively. Calculate the molar conductivity at infinite dilution for $\text{CH}_3\text{COOH}$.

A $0.02\,\text{M}$ solution of a weak acid $\text{HA}$ has a molar conductivity of $15\,\text{S} \cdot \text{cm}^2 \cdot \text{mol}^{-1}$. If the limiting molar conductivity of $\text{HA}$ is $300\,\text{S} \cdot \text{cm}^2 \cdot \text{mol}^{-1}$, what is the degree of dissociation ($\alpha$) of the acid?

Which of the following factors does NOT affect the electrolytic conductance of a solution?

The conductivity of $0.20\,\text{M}$ solution of $\text{KCl}$ at $298\,\text{K}$ is $0.0248\,\text{S} \cdot \text{cm}^{-1}$. Calculate its molar conductivity.

Why does the conductivity ($\kappa$) of an electrolytic solution generally increase with increasing concentration?