Practice Redox Reaction in Chemistry

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

A chemical reaction in which electrons are transferred from one substance (the reducing agent, which is oxidized) to another (the oxidizing agent, which is reduced).

One thing loses electrons (oxidized), another gains them (reduced).

Example 1

easy
Define a redox reaction and explain the relationship between oxidation and reduction.

Example 2

medium
In the reaction \text{Zn(s)} + \text{CuSO}_4\text{(aq)} \rightarrow \text{ZnSO}_4\text{(aq)} + \text{Cu(s)}, identify the oxidizing agent and the reducing agent.

Example 3

medium
Determine whether the following reaction is a redox reaction: \text{HCl(aq)} + \text{NaOH(aq)} \rightarrow \text{NaCl(aq)} + \text{H}_2\text{O(l)}. Justify your answer.

Example 4

hard
Balance the following redox reaction in acidic solution using the half-reaction method: \text{MnO}_4^- + \text{Fe}^{2+} \rightarrow \text{Mn}^{2+} + \text{Fe}^{3+}.
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