Explanation
Hint: Ammonia $$N{{H}_{3}}$$ gas is highly soluble in water and needs to be dried for its use in industry and commerce.
Explanation:
Ammonium phosphates are formed when ammonia combines with phosphorus pentoxide.
Calcium chloride is highly hygroscopic, absorbing practically all of the water when it comes into contact, although but it interacts exothermically with ammonia to generate calcium chloride complex.
As $$CaO$$ is basic in nature and does not react with ammonia, ammonia can be quickly dried by passing it over fresh quicklime or soda lime (granules of calcium oxide and sodium hydroxide).
Final answer:
So, ammonia can be dried by $$CaO$$.
Hence, the correct answer is option $$C$$.
Please disable the adBlock and continue. Thank you.