Redox Reactions Quiz

Redox Reactions Quiz
Test your knowledge of redox (reduction-oxidation) reactions with this chemistry quiz.
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Instructions
Which of the following is an example of a redox reaction?*
Rusting of ironDissolving sugar in waterMelting iceBoiling water
In a redox reaction, which species is reduced?*
The one that gains electronsThe one that loses electronsThe one that forms a precipitateThe one that evaporates
Select all the agents that can act as oxidizing agents.*
Oxygen (O₂)Hydrogen peroxide (H₂O₂)Sodium chloride (NaCl)Potassium permanganate (KMnO₄)Other
Balance the following redox reaction (input coefficients): Fe²⁺ + MnO₄⁻ + H⁺ → Fe³⁺ + Mn²⁺ + H₂O*
Rows Fe²⁺ MnO₄⁻ H⁺ Fe³⁺ Mn²⁺ H₂O
Coefficient
The substance that donates electrons in a redox reaction is called the Agent Name agent.
Identify the oxidation state of sulfur in H₂SO₄.*
Which of the following changes indicate a redox process?*
Change in oxidation stateFormation of a gasColor changeChange in temperature
Assign oxidation numbers to each element in the following compound: Na₂Cr₂O₇*
Which element is oxidized in the following reaction: Zn + CuSO₄ → ZnSO₄ + Cu?*
Zinc (Zn)Copper (Cu)Sulfur (S)Oxygen (O)
Rate your confidence in your knowledge of redox reactions.
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Rows	Fe²⁺	MnO₄⁻	H⁺	Fe³⁺	Mn²⁺	H₂O
Coefficient