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

c

Step-by-step explanation:

Answer 2

Answer: Option (c) is the correct answer.

Step-by-step 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.