Chemical And Ionic Equilibrium Result Question 27

27. The conjugate acid of $\mathrm{NH} _2^{-}$is

(1985, 1M)

(a) $\mathrm{NH} _3$

(b) $\mathrm{NH} _2 \mathrm{OH}$

(c) $\mathrm{NH} _4^{+}$

(d) $\mathrm{N} _2 \mathrm{H} _4$

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Answer:

Correct Answer: 27. ( a )

Solution:

$ \underset{\text { Base }}{\mathrm{NH}_2^{-}}+\mathrm{H}_2 \mathrm{O} \rightleftharpoons \underset{\text { Conjugate acid }}{\mathrm{NH}_3}+\mathrm{OH}^{-} $