Test for Ammonia Gas, NH3(g).
1) Ammonia gas has no colour.
2) Ammonia gas has a characteristic pungent smell.
3) Ammonia gas will turn moist
litmus paper
from red to blue,
and moist universal indicator
paper to blue.
It is alkaline in water, pH = 11.5.
4) Ammonia gas will put out a lit splint.
Specific test.
Ammonia will form a white smoke
in the presence of hydrogen
chloride
gas, HCl(g).
The white smoke is ammonium chloride, NH4Cl(s).
Collecting Ammonia gas.
Ammonia gas is less dense than air and can be
collected by upward delivery or using a gas
syringe.
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