What is the balanced oxidation half-reaction and reduction half-reaction in the following reaction
2H2(g) + O2(g) →2H2O(l)
A half reaction can be oxidation or reduction reaction and both the reaction takes place simultaneously in a redox or oxidation-reduction reaction. If the chemical species undergoes chemical reaction by losing of electron, then the species get oxidized and the reaction is called oxidation half reaction. On the other hand, if the chemical species undergoes chemical reaction by gaining electron, then the species get reduced and the reaction is reduction half reaction. When a species undergoes oxidation, then its oxidation number increases and if it undergoes reduction, then its oxidation number decreases.
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