ElectrochemistryRules and Exceptions of Oxidation Number31Choose the best answerThe oxidation numbers of oxygen in OF₂ and H₂O₂ are respectively:A−2, −1B+2, −1C−1, +2D+2, +1 Like 1 Discuss 0Share
ElectrochemistryBalancing Redox Reactions by Ion-Electron Method32Choose the best answerTo balance the reduction half-reaction: MnO₂ + 4H⁺ → Mn²⁺ + 2H₂O electrons should be added as:A2e⁻ on the left sideB2e⁻ on the right sideC4e⁻ on the left sideD4e⁻ on the right side Like 3 Discuss 0Share
ElectrochemistryGalvanic Cell33Choose the best answerThe overall reaction responsible for producing electrical energy in a voltaic cell is a:AHydrolysis reactionBOxidation reaction onlyCReduction reaction onlyDRedox reaction Like 0 Discuss 0Share
ElectrochemistryOxidation Number34Choose the best answerThe oxidation number of an element in a species may be:APositiveBZero or fractionalCNegativeDAll of these Like 0 Discuss 0Share
ElectrochemistryRules and Exceptions of Oxidation Number35Choose the best answerThe oxidation states of oxygen in OF₂ and H₂O₂ are respectively:A−2, −1B+2, −1C−1, +2D+2, +1 Like 0 Discuss 0Share