Question

The conjugate acid of $N{H}_3$ is :

• A. $N_2{H}_4$
• B. $N{H}_2^{-}$
• C. $N{H}_4^{+}$
• D. $N{H}_{2}OH$

Answer 1

The correct option is C $N{H}_4^{+}$

Species formed by the gain of proton by the base is called conjugate acid of that base.
$N{H}_3+H^{+}\rightleftharpoons N{H}_4^{+}$
hence, $N{H}_4^{+}$ is conjugate acid of $N{H}_3$