pBlock ElementsII - Result Question 95
91. Give reasons in one or two sentences.
Ammonium chloride is acidic in liquid ammonia solvent.
(1991, 1M)
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Solution:
Ammonia, in liquid state undergo self-ionisation as :
$2 NH _3 \rightleftharpoons NH _4^{+}+NH _2^{-}$
Thus, addition of $NH _4 Cl$ to liquid ammonia increases concentration of $NH _4^{+}$in solution and $NH _4 Cl$ act as acid.
BETA
