Oxidation-Reduction Reactions Worksheet
This worksheet covers fundamental concepts of oxidation and reduction reactions, including identifying oxidation states, oxidizing and reducing agents, and balancing redox equations.
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Standards
Oxidation-Reduction Reactions
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Read each question carefully and provide your answer in the space provided. Show all your work for calculations.
1. In an oxidation-reduction reaction, what is the process of losing electrons called?
Reduction
Oxidation
Neutralization
Hydrolysis
2. Which of the following acts as the oxidizing agent in a redox reaction?
The substance that is oxidized
The substance that loses electrons
The substance that gains electrons
The substance that is reduced
3. The oxidation number of an uncombined element is always .
4. In a redox reaction, a reducing agent itself gets .
5. Determine the oxidation state of sulfur in H₂SO₄.
6. Identify the oxidizing agent and reducing agent in the following reaction: Zn(s) + CuSO₄(aq) → ZnSO₄(aq) + Cu(s)
7. Oxidation always involves the gain of oxygen.
True
False
8. All chemical reactions are redox reactions.
True
False
9. Balance the following redox reaction in acidic medium: Cr₂O₇²⁻(aq) + SO₃²⁻(aq) → Cr³⁺(aq) + SO₄²⁻(aq)