p-Block elementsMedium

Question

Ammonia can be dried by :

Options

A.conc. H2SO4
B.P4O10
C.CaO
D.anhydrous CaCl2

Solution

Rest all are acidic in nature and will react with NH3 chemically.
        2NH3 + N2So4 → (NH4)2SO4
        P4O10 + 12NH3 → 4[(NH4)3PO4] + 6H2O
        CaCl2 + 8NH3 → CaCl2.8NH3

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