Question

Why NH3 gas a covalent compound does not conduct electricity but its aq. solution NH4OH is a weak electrolyte

Answer 1

as in the solution NH4OH we know that h is hydrogen n o is oxygen so OH forms water so water is a good conducter of electricity so we can say that HN4OH is a cinducter of electricity and NH3 is a gas compound so

Answer 2

$\mathrm{NH}_{3}$ Covalent Bond Compound is given in the diagram below.

In Ammonia, nitrogen is covalently bonded with three hydrogen atoms in gaseous state with absence of any ions to conduct electricity.

The aqueous solution of $\mathrm{NH_4OH}$ forms the $\mathrm{{OH}^{-} \text { and } N H_{4}^{+}}$ ions which are ammonium ions and hydroxide ions

When ammonia gas is dissolved in water it gives an aqueous solution of Ammonium hydroxide. It being an electrolyte (weak), ammonium and hydroxide ions are produced in small extent by conducting electricity.