Question

Which identifies an oxidation-reduction reaction? a double replacement reaction a neutralization reaction a reaction in which oxidation numbers change a reaction in which no electrons are transferred

Answer 1

A reaction in which oxidation numbers change is the answer! :D

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Answer 2

Answer: Option (c) is the correct answer.

Explanation:

In an oxidation reaction there is loss of electrons whereas in a reduction reaction there is gain of electrons.

So, overall there is exchange of electrons in an oxidation-reduction reaction.

For example, $CH_{4} + 2O_{2} \rightarrow CO_{2} + 2H_{2}O$ is an oxidation-reduction reaction.

As there is change in oxidation number of oxygen from 0 to -2 and change in oxidation number of carbon from -4 to +4.

Thus, we can conclude that a reaction in which oxidation numbers change identifies an oxidation-reduction reaction.