🔁 Redox Reactions Quiz

Test your chemistry skills with this quiz on oxidation-reduction reactions, agents, and equations.

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A redox reaction involves both oxidation (loss of electrons) and reduction (gain of electrons). These reactions are characterized by the transfer of electrons between chemical species.

  • Elements in elemental form have oxidation number 0 (e.g., Zn, O₂, Cl₂)
  • Oxygen is usually -2 (except in peroxides where it's -1)
  • Hydrogen is usually +1 (except in metal hydrides where it's -1)
  • Sum of oxidation numbers equals the charge on the compound/ion
  • Monatomic ions have oxidation numbers equal to their charge

Concept Explanation Example
Oxidation Loss of electrons (↑ oxidation number) Zn → Zn²⁺ + 2e⁻
Reduction Gain of electrons (↓ oxidation number) Cu²⁺ + 2e⁻ → Cu
Oxidizing Agent Gets reduced, causes oxidation MnO₄⁻ in acidic solution
Reducing Agent Gets oxidized, causes reduction Na, Zn, LiAlH₄
Redox Reaction Simultaneous oxidation and reduction Zn + Cu²⁺ → Zn²⁺ + Cu
© 2023 Redox Reactions Quiz | Designed for Chemistry Learners
⚙️ Quiz Options
Covers oxidation numbers, half-reactions, agents, etc.
Identify if reactions are redox or not
Identify oxidizing/reducing agents
Standard MCQs with 3-4 options
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