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Reaction with Metals

The following...

Question

The following questions are based on the preparation of ammonia gas in the laboratory:
How is ammonia gas collected?

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Solution

Ammonia is lighter than air hence it displaces air downward. It is highly soluble in water and hence cannot be collected over water.

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Q. The following questions are based on the preparation of ammonia gas in the laboratory:
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Q. The following questions are based on the preparation of ammonia gas in the laboratory:
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Q. (i) How is ammonia gas prepared in laboratory starting from NH₄Cl? State the conditions and balanced equation for the preparation.
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Name the compound normally used as a drying agent during the process.

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(ii) State why concentrated sulphuric acid is not used for drying ammonia gas.
(iii) Why is ammonia gas not collected over water?

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