Question

Which statement is true in the following reaction?

Answer 1

Statement 5.

Explanation:

`"Mg"(s)` is the reducing agent, donating `2` electrons to the `"Cu"^(2+)` ion, thereby losing `2` electrons `->` `"Mg"^(2+)` (oxidized).

`"Cu"^(2+)` is the oxidizing agent, stealing `2` electrons from the `"Mg"(s)`, thereby becoming reduced in the process.

Reducing agents (a.k.a. reductants) become oxidized in the process of reducing a species. Oxidizing agents (oxidants) become reduced by convention.

Also, these agents are found on the reactants' side.