Chemistry - Redox Reactions Question with Solution | TestHub
ChemistryRedox ReactionsProblem involving Equivalent ConceptEasy2 minQB
ChemistryEasysingle choice
During the oxidation of Mn²⁺ to MnO₄⁻ by PbO₂ in acid medium, the number of moles of acid consumed per mole of Mn²⁺ ion is
Options:
Answer:
C
Solution:
Oxidation: Mn²⁺ + 4H₂O MnO₄⁻ + 8H⁺ + 5e⁻. Reduction: PbO₂ + 4H⁺ + 2e⁻ Pb²⁺ + 2H₂O (× 5, Mn side × 2). Overall: 2Mn²⁺ + 5PbO₂ + 4H⁺ 2MnO₄⁻ + 5Pb²⁺ + 2H₂O. H⁺ consumed per Mn²⁺ = 4/2 = 2. Hence (c).
Stream:JEESubject:ChemistryTopic:Redox ReactionsSubtopic:Problem involving Equivalent Concept
⏱ 2mℹ️ Source: QB
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