The molar conductance of an infinitely dilute solution of ammonium chloride was found to be 185 S cm^2 mol^-1 and the ionic conductance of hydroxyl…

The molar conductance of an infinitely dilute solution of ammonium chloride was found to be $\displaystyle 185 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$ and the ionic conductance of hydroxyl and chloride ions are $\displaystyle 170$ and $\displaystyle 70 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$, respectively. If molar conductance of $\displaystyle 0.02$ M solution of ammonium hydroxide is $\displaystyle 85.5 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$, its degree of dissociation is given by $\displaystyle x \times 10^{-1}$. The value of $\displaystyle x$ is $\displaystyle \_\_\_\_$. (Nearest integer)