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Q.
Which one of the following graphs between molar conductivity $\left(\Lambda_{\mathrm{m}}\right)$ versus $\sqrt{C}$ is correct?
NTA AbhyasNTA Abhyas 2020Electrochemistry
Solution:
Both $NaCl$ and $KCl$ are strong electrolytes and as $\text{N}\text{a}^{+}$ (aq) has less conductance than $K^{+}$ (aq) due to more hydration of $\text{N}\text{a}^{+}$ (g) due to small size and more hydration energy therefore the graph of option (B) is correct here.
Extent of hydration $ \propto \frac{1}{\Lambda_{m}}$