ElectrochemistryCalculation of Oxidation Number66Choose the best answerIn which compound does sulfur have its highest oxidation state?AS₈BSO₂CSO₂Cl₂DNa₂S₂O₃ Like 0 Discuss 0Share
ElectrochemistryCorrosion and Rusting67Choose the best answerDuring rusting, iron is converted into iron oxides. Iron is therefore:ANeutralizedBSublimedCReducedDOxidized Like 0 Discuss 0Share
ElectrochemistryFeasibility of Redox Reactions68Choose the best answerWhich reaction is thermodynamically feasible under standard conditions?AZn²⁺ + Cu → Cu²⁺ + ZnBFe + CuSO₄ → FeSO₄ + CuCZn + MgSO₄ → ZnSO₄ + MgDCd + MgSO₄ → CdSO₄ + Mg Like 0 Discuss 0Share
ElectrochemistryFeasibility of Redox Reactions69Choose the best answerGiven: Zn → Zn²⁺ + 2e⁻ E°ox = +0.76 V Cu → Cu²⁺ + 2e⁻ E°ox = −0.34 V The spontaneous reaction is:ACu + Zn²⁺ → Cu²⁺ + ZnBCu²⁺ + Zn → Cu + Zn²⁺CCu²⁺ + Zn²⁺ → Cu + ZnDCu²⁺ + Zn²⁻ → Cu + Zn²⁺ Like 0 Discuss 0Share
ElectrochemistryElectrolytic Refining70Choose the best answerDuring electrolytic purification of copper, impure copper is made the:ACathodeBElectrolyteCAnodeDSalt bridge Like 0 Discuss 0Share