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What are the General Tests for Hydrogen Chloride Gas?
1) Hydrogen
chloride
gas, HCl(g)
has no colour
but it fumes in moist
air (it looks misty).
2) Hydrogen chloride gas has a pungent smell.
3) Hydrogen
chloride gas turns moist
litmus paper from blue to red
and moist universal indicator
paper to red - it is acidic.
4) Hydrogen chloride gas is extremely soluble in water.
It dissolves to form hydrochloric acid, a strong acid,
pH =
1.
5) Hydrogen chloride gas will put out a lit splint.
What is the Specific Test for Hydrogen Chloride Gas?
Hydrogen chloride gas forms a white smoke
with
ammonia.
See the test for ammonia gas.
How is Hydrogen Chloride Gas Collected?
Hydrogen chloride gas is
more dense than air and can
be collected by downward
delivery or by using a gas
syringe.
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