Reduction Chemistry Example 3

Follow the full solution, then compare it with the other examples linked below.

Example 3

easy
In the reaction Cu2++2e−→Cu\text{Cu}^{2+} + 2e^- \rightarrow \text{Cu}, is copper being oxidized or reduced?

Solution

  1. 1
    Cu2+\text{Cu}^{2+} gains 2 electrons to become Cu metal.
  2. 2
    Gaining electrons = reduction. Copper is being reduced.

Answer

Reduced (Cu2+ gains electrons)\text{Reduced (Cu}^{2+}\text{ gains electrons)}
Remember: Reduction Is Gain (of electrons). The oxidation number decreases from +2+2 to 00.

About Reduction

The gain of electrons by an atom, ion, or molecule during a chemical reaction, resulting in a decrease in its oxidation state.

Learn more about Reduction →

More Reduction Examples

Example 1 easy

In the reaction [formula], identify which species is reduced.

Example 2 medium

In a blast furnace, iron ore is reduced: [formula]. Identify the reducing agent.

Example 4 medium

In the reaction [formula], which substance is reduced?

← All Reduction Examples Reduction Concept