BUMHS MDCAT 2025 Chemistry#Electrochemistry#Oxidation Number Method76Choose the best answerNO₂⁻ → NO₃⁻ + ne⁻. Value of "n" by the oxidation number method is: (BUMHS MDCAT 2025)A1B2C3D6 Like 0 Discuss 0Share6
ElectrochemistryCalculation of Oxidation Number77Choose the best answerThe oxidation state of chlorine in MgCl₂ is:A0B−2C+2D−1 Like 0 Discuss 0Share
ElectrochemistryStandard Hydrogen Electrode78Choose the best answerWhen SHE acts as an anode, the half-reaction is:AH₂(g) → 2H⁺(aq) + 2e⁻B2H₂O(l) → 2H₂(g) + O₂(g)C2H⁺(aq) + 2e⁻ → H₂(g)D2H₂O(l) + 2e⁻ → 2OH⁻(aq) + H₂(g) Like 0 Discuss 0Share
ElectrochemistryCalculation of Oxidation Number79Choose the best answerIn which compound does sulfur have its highest oxidation state?AS₈BSO₂CSO₂Cl₂DNa₂S₂O₃ Like 0 Discuss 0Share
ElectrochemistryCorrosion and Rusting80Choose the best answerDuring rusting, iron is converted into iron oxides. Iron is therefore:ANeutralizedBSublimedCReducedDOxidized Like 0 Discuss 0Share