The gas that can be collected by downward displ... - JAMB Chemistry 2017 Question
The gas that can be collected by downward displacement of air is
A
chlorine
B
sulphur (IV) oxide
C
carbon (IV) oxide
D
ammonia
correct option: d
Upward delivery works well for hydrogen and ammonia, which are both less densed than air. Sometimes, they are collected over water.
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