water
(hydrogen oxide).2H2(g) + O2(g)
2H2O(l)
The Test for Hydrogen Gas, H2(g).
1) Hydrogen gas has no colour or smell.
2) Hydrogen gas has no effect on moist
litmus paper
or moist universal indicator paper -
it is neutral.
3) Hydrogen gas burns with a characteristic 'pop'.
Specific Test for Hydrogen Gas.
Hydrogen gas
is recognised by the 'pop' when it burns.
The 'pop' is the sound of a small
explosion,
hydrogen is highly flammable!
hydrogen +
oxygen water
(hydrogen oxide).
2H2(g) + O2(g) 2H2O(l)
This highly exothermic reaction is an example of oxidation.
Collecting Hydrogen.
Hydrogen gas is less
dense than air
and can be
collected by upward delivery, over water or using a gas
syringe.
gcsescience.com Contents The Periodic Table Index Quizzes gcsescience.com
Copyright © 2013 Dr. Colin France. All Rights Reserved.