ElectrochemistryStandard Hydrogen Electrode46Choose the best answerStandard conditions for the hydrogen electrode include:AH₂ at approximately 1 bar pressureBUnit activity of H⁺CTemperature commonly specified as 298 KDAll of these Like 0 Discuss 0Share
ElectrochemistryStandard Hydrogen Electrode47Choose the best answerSHE acts as an anode with Cu but as a cathode with Zn because:AZn has a lower E°red than H⁺/H₂, while Cu has a higher E°redBZn has a higher E°red than CuCCu has a lower E°red than ZnDHydrogen always acts only as an anode Like 0 Discuss 0Share
SINDH MDCAT 2019 CHEMISTRY#Electrochemistry#Oxidation Number48Choose the best answerThe oxidation state of Cl in HClO₄ is: (Sindh MDCAT 2019)A-1B+5C+7D-7 Like 0 Discuss 0Share
ElectrochemistryElectron Transfer and Oxidation Number Change49Choose the best answerWhich change involves transfer of five electrons per metal atom?AMnO₄²⁻ → MnO₂BCrO₄²⁻ → Cr³⁺CMnO₄⁻ → Mn²⁺DCr₂O₇²⁻ → 2Cr²⁺ Like 0 Discuss 0Share
ElectrochemistryElectrochemical Series50Choose the best answerThe electrochemical series is based on electrode potentials measured relative to the:ApH scaleBArrhenius scaleCStandard hydrogen electrodeDpOH scale Like 0 Discuss 0Share