ElectrochemistryFeasibility of Redox Reactions76Choose 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
Sindh MDCAT 2021 Chemistry#Electrochemistry#Galvanization77Choose the best answerCoating of Zinc on iron is called:ASurface coatingBElectroplatingCGalvanizingDSheardizing Like 0 Discuss 0Share
ElectrochemistryElectrolytic Refining78Choose the best answerDuring electrolytic purification of copper, impure copper is made the:ACathodeBElectrolyteCAnodeDSalt bridge Like 0 Discuss 0Share
ElectrochemistryCalculation of Oxidation Number79Choose the best answerThe oxidation states of nitrogen in NH₄NO₃ are:A−3 and +5B+5 and +3C−3 and −3D0 and +5 Like 4 Discuss 0Share2
Sindh MDCAT 2021 Chemistry#Electrochemistry#Oxidation Number80Choose the best answerOxidation state of oxygen in oxides is:A-2B+2C-1/2D-1 Like 0 Discuss 0Share