ElectrochemistryStandard Hydrogen Electrode26Choose the best answerWhen SHE is connected to a Cu²⁺/Cu half-cell under standard conditions, electron flow is from:AHydrogen electrode to copper electrodeBCopper electrode to hydrogen electrodeCHydrogen electrode to the electrolyte onlyDCuSO₄ solution to the hydrogen electrode Like 0 Discuss 0Share
ElectrochemistryElectrochemical Series and Metal Reactivity27Choose the best answerWhich metal does not liberate H₂ from a dilute non-oxidizing acid?AMgBPtCZnDCa Like 0 Discuss 0Share
ElectrochemistryElectron Flow in Galvanic Cell28Choose 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
ElectrochemistryFuel Cells29Choose the best answerA commonly used electrolyte in an alkaline hydrogen–oxygen fuel cell is:AKOHBNaCl(aq)CNaNO₃DMolten NaCl Like 0 Discuss 0Share
ElectrochemistrySalt Bridge30Choose the best answerIf the salt bridge is removed from a working galvanic cell:ACell operation becomes fasterBThe electrode reactions continue indefinitelyCSustained current quickly stopsDThe electrodes exchange their roles Like 0 Discuss 0Share