Redox Reactions - Video Tutorials & Practice Problems
Redox Reactions (oxidation-reduction reactions) involve transference of an electron(s) between reactants.
Oxidation-Reduction Reactions
Redox Reactions
To remember the difference between oxidation and reduction just learn:LEO the lion goes GER
Redox Reactions
Oxidizing Agent is reduced and in turn oxidizes another element/compound.
Reducing Agent is oxidized and in turn reduces another element/compound.
Redox Reactions Example 1
Which element is being reduced in the following reaction?
Cr2O72- + 3 HNO2 + 5 H+ → 2 Cr3+ + 3NO3- + 4 H2O
Identify the oxidizing agent and reducing agent from the following redox reaction.
Ba (s) + Cl2 (g) → BaCl2 (aq)
Which element is oxidized and which is reduced in the following reaction?
Hg (aq) + HgCl2 (aq) → Hg2Cl2
Which of the following represents an oxidation-reduction reaction?
I. PCl3 (aq) + Cl2 (g) → PCl5 (aq)
II. 2 AgNO3 (aq) + Cu (s) → Cu(NO3)2 (aq) + 2 Ag (s)
III. CO2 (g) + 2 LiOH (aq) → Li2CO3 (aq) + H2O (l)
IV. FeCl2 (aq) + 2 NaOH (aq) → Fe(OH)2 (aq) + 2 NaCl (aq)
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- Which element is oxidized in this reaction? Fe2O3 + 3CO → 2Fe + 3CO2
- Which element is reduced in this reaction? 2KMnO4 + 3Na2SO3 + H2O → 2MnO2 + 3Na2SO4 + 2KOH
- Which substance is the oxidizing agent in this reaction? 2CuO + C → 2Cu + CO2
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- Cl2(g)+ 2 F−(aq) → F2(g) + 2 Cl−(aq)
- Which element is oxidized in this reaction? ZNO + C --> ZN + CO
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