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  4. It is recommended that ammonia bottle should be opened after cooling in ice for some time because

Q. It is recommended that ammonia bottle should be opened after cooling in ice for some time because

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Solution:

The vapour pressure of ammonia at room temperature is very high and hence the ammonia will evaporate unless the vapour pressure is decreased.Cooling decreases the vapour pressure so that the liquid remains in the same state. Hence, the bottle is cooled before opening.