Balancing Redox Equations Worksheet
Grade 9 Science worksheet focusing on balancing redox reactions using the half-reaction method in acidic and basic solutions.
Includes
Standards
Balancing Redox Equations
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Date:
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Read each question carefully and balance the following redox equations using the half-reaction method. Show all your work for full credit.
1. Balance the following redox reaction in acidic solution:
MnO₄⁻(aq) + C₂O₄²⁻(aq) → Mn²⁺(aq) + CO₂(g)
2. Balance the following redox reaction in basic solution:
Cr(OH)₃(s) + ClO⁻(aq) → CrO₄²⁻(aq) + Cl⁻(aq)
3. In a redox reaction, the species that loses electrons is said to be , and it acts as the agent.
4. The species that gains electrons is said to be , and it acts as the agent.
5. Which of the following is true for an oxidation half-reaction?
Electrons are gained.
The oxidation number decreases.
Electrons are lost.
It occurs at the cathode.
6. In balancing redox reactions in basic solution, H⁺ ions are added to balance hydrogen atoms, followed by OH⁻ ions.
True
False