In the preparation of ammonia, why should the mixture of ammonium chloride and calcium hydroxide be a paste, not dry powder?
回答 (2)
2015-11-29 7:25 am
Ammonia gas is extremely soluble in water. If the reactants are in aqueous solution the ammonia gas produced will dissolve in the water and little ammonia gas will be generated which can be collected above the reactants.
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