Write a balanced chemical equation for each of the following reactions and also classify them.
Hydrogen sulphide gas reacts with oxygen gas to form solid sulphur and liquid water.
The reaction is as follows:
H2S + O2→ S + H2O
In the above equation there two oxygen molecules on reactant side and only one molecule on product side. So let us first balance the number of oxygen molecules on both sides first.
H2S + O2→ S + 2H2O
Now there are four molecules of hydrogen on product side and only two molecules on reactant side. So let us now balance the number of hydrogen molecules on both sides.
2H2S + O2→ S + 2H2O
Finally there are two sulphur molecules on reactant side and only one sulphur molecule on product side. So the overall balanced equation can be written as follows:
2H2S + O2→ 2S + 2H2O
This reaction is also a type of displacement reaction in which oxygen replaces sulphur from hydrogen sulphide to form water.