1.

Ammonia cannot be dried over anhydrous calcium chloride. Why?

Answer»

Solution :When water is ABSORBED by calcium chloride, it undergoes HYDROLYSIS to GIVE HYDROCHLORIC acid.
`CaCl_(2)+2H_(2)O to Ca(OH)_(2)+2HCl`
Sinceammonia is basic, it is neutralisedby HCl to give salt.
`NH_(3)+HCl to NH_(4)Cl`.
Hence ammonia is dried over a basic oxide, quick lime.


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