An aqueous solution of ammonia consists of

Q. A solution when diluted with $H_{2}O$ and boiled, gives a white precipitate. On addition of excess ${NH}_{4}Cl/{NH}_{4}OH$, the volume of precipitate decreases leaving behind a white gelatinous precipitate. Identify the precipitate which dissolves in ${NH}_{4}OH/{NH}_{4}Cl$ .

Q. $p{K}_b$ for ${NH}_{4}OH$ at certain temperature is $4.74$. The pH of basic buffer containing equimolar concentration of ${NH}_{4}OH$ and ${NH}_{4}Cl$ will be?

Q. Ammonia is a weak base that reacts with water according to the equation

Q. The reaction of water with ammonia is $H_{2}O+N{H}_3\to N{H}_4^{+}+O{H}^{-}$. In this reaction, water behaves as:

Q. Equilibrium constant for the reaction, $N{H}_{4}OH+H^{+}\rightleftharpoons N{H}_4^{+}+H_{2}O$ is $1.8\times {10}^9$. Hence, equilibrium constant for $N{H}_3\left(aq\right)+H_{2}O\rightleftharpoons N{H}_4^{+}+O{H}^{-}$ is: