The complete combustion of methane is written CH₄ + 2O₂ → CO₂ + 2H₂O.In this reaction,the methane is ________ and the oxygen is ________.

Question

Quizplus · Accepted Answer

The oxidation state of carbon in methane is -4, while in carbon dioxide it is +4, indicating that carbon is oxidized. On the other hand, the oxidation state of oxygen in oxygen molecules is 0, but in water it is -2, which means that oxygen is reduced. Thus, methane is oxidized and oxygen is reduced. Therefore, choice A is the correct answer. Choices B, C, and D are not applicable to this reaction.

The Complete Combustion of Methane Is Written CH₄ + 2O₂