pBlock ElementsII 1 Question 41
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41. Ammonia gas can be dried by
======= ####41. Ammonia gas can be dried by
3e0f7ab6f6a50373c3f2dbda6ca2533482a77bed (a) conc $\mathrm{H}{2} \mathrm{SO}{4}$
(c) $\mathrm{CaCl}_{2}$
(b) $\mathrm{P}{2} \mathrm{O}{5}$
(d) quicklime
$(1978,1 M)$
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Solution:
- Quicklime $(\mathrm{CaO})$ is used for drying $\mathrm{NH}{3}$ gas because both are basic, do not react. On the other hand, $\mathrm{H}{2} \mathrm{SO}{4}$ and $\mathrm{P}{2} \mathrm{O}{5}$ are acidic, reacts with ammonia forming salts. $\mathrm{CaCl}{2}$ forms complex with ammonia.
