Assertion (A) Sodium acetate on Kolbe’s electrolysis gives ethane.

Reason (R) Methyl free radical is formed at cathode.

When a current of 10 A is passes through molten AlCl$$_3$$ for 1.608 minutes. The mass of Al deposited will be

[Atomic mass of Al = 27 g]

The molar conductivities $$\left(\lambda_{\mathrm{m}}^{\Upsilon}\right)$$ at infinite dilution of $$\mathrm{KBr}, \mathrm{HBr}$$ and $$\mathrm{KNH}_2$$ are 120.5, 420.6 and $$90.48 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$ respectively. Find the value of $$\lambda_{\mathrm{m}}^\Upsilon$$ for $$\mathrm{NH}_3$$.