Question

The conjugate acid of $N{H}_2^{-}$ is:

• A. $N{H}_3$
• B. $N{H}_{2}OH$
• C. $N{H}_4^{+}$
• D. $N{H}^{2-}$

Answer 1

The correct option is A $N{H}_3$

Base or acid, differs form their conjugate by one proton.
Base + $H^{+}\to$ Conjugate acid
$N{H}_2^{-}\left(\text{base}\right)+H^{+}\to N{H}_3$ (conjugate acid)