Identify the colligative property from the followings?

Determine the electrode potential of $\text{Sn}^{2+}(0.01\text{M})\ |\ \text{Sn(s)}$ at $25^\circ\text{C}$ if $E^\circ_{\text{Sn}}$ is $-0.136$ V.

If molar conductance at infinite dilution for $\text{CH}_3\text{COO}^-$ and $\text{H}^+$ ions are $50\ \text{S cm}^2\ \text{mol}^{-1}$ and $350\ \text{S cm}^2\ \text{mol}^{-1}$ respectively, molar conductivity of $5 \times 10^{-2}$ M $\text{CH}_3\text{COOH}$ is $20\ \text{S cm}^2\text{mol}^{-1}$. What is the hydrogen ion concentration in $\text{mol/dm}^3$ of $\text{CH}_3\text{COOH}$?

Which of the following expressions indicates the correct relationship between molar conductivity of strong electrolyte and its concentration?