MDCAT Chemistry Past Papers Reconduct 2023#Electrochemistry#Electrorefining6Choose the best answerHow would you describe the purity of copper obtained through electric refining? (MDCAT Reconduct 2023)A60% pureB100% pureC50% pureD80% pure Like 0 Discuss 0Share
ElectrochemistryElectron Flow in Galvanic Cell7Choose the best answerIn a Zn–Cu galvanic cell, electrons flow through the external circuit from:AZn electrode to Cu electrodeBCu electrode to Zn electrodeCSalt bridge to Zn electrodeDCu²⁺ solution to Zn²⁺ solution Like 0 Discuss 0Share
ElectrochemistryOxidation and Reduction8Choose the best answerIn the reaction: HI + H₂SO₄ → I₂ + SO₂ + H₂O which element is reduced?AHBICSDO Like 0 Discuss 0Share
ElectrochemistryElectron Transfer and Oxidation Number Change9Choose the best answerWhich change involves transfer of two electrons per metal atom?AMnO₄²⁻ → MnO₂BMnO₄⁻ → Mn²⁺CCrO₄²⁻ → Cr³⁺DCr₂O₇²⁻ → 2Cr³⁺ Like 0 Discuss 0Share
ElectrochemistryCalculation of Oxidation Number10Choose the best answerThe average oxidation state of carbon in glucose, C₆H₁₂O₆, is:A+4B−4C+6D0 Like 0 Discuss 0Share