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Question

Why can't we use Concentrated H2SO4 for drying ammonia?


A

Since NH3 and H2SO4 are base, no reaction occurs.

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B

Since NH3 and H2SO4 are acidic no reaction occurs.

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C

Since NH3 is a base and H2SO4 is an acid, together they will form a salt.

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D

None of the above

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Solution

The correct option is C

Since NH3 is a base and H2SO4 is an acid, together they will form a salt.


Since NH3 is base and concentrated H2SO4 is an acid, the latter cannot dry the gas. Instead, the acid will react with ammonia to form white fumes of (NH4)2SO4.

2NH3+Conc.H2SO4(NH4)2SO4


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