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# Solve this following

Question:

$\wedge_{\mathrm{m}}^{\circ}$ for $\mathrm{NaCl}, \mathrm{HCl}$ and $\mathrm{NaA}$ are $126.4,425.9$ and $100.5 \mathrm{~S} \mathrm{~cm}^{2} \mathrm{~mol}^{-1}$, respectively. If the conductivity of $0.001 \mathrm{M} \mathrm{HA}$ is $5 \times 10^{-5} \mathrm{~S} \mathrm{~cm}^{-1}$, degree of dissociation of $\mathrm{HA}$ is :

1. $0.75$

2. $0.125$

3. $0.25$

4. $0.50$

Correct Option: , 2

Solution: