Question

Why is ammonia bottle first cooled in ice before opening it?

Answer 1

the vapour pressure of ammonia at room temperature is very high &hence the ammonia will evaporate unless the vapour pressure is decrease the vapour pressure so that the liquid remains in the same state. hence, the bottle is cooled before opening.

Answer 2

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.