A) cone. \[{{H}_{2}}S{{O}_{4}}\]
B) \[{{P}_{2}}{{O}_{5}}\]
C) anhydrous \[CaC{{l}_{2}}\]
D) none of these
Correct Answer: D
Solution :
Ammonia can be dried by quicklime \[(CaO)\]because it does not react with ammonia while cone. \[{{H}_{2}}S{{O}_{4}},\,{{P}_{2}}{{O}_{5}}\] and anhy. \[CaC{{l}_{2}}\] react with ammonia and hence they cannot be used for drying to ammonia.
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