In a galvanic cell with standard hydrogen electrode (SHE, ) and copper electrode (, ), what is the standard cell potential ?
Answer and explanation
Correct answer: A.
- Step 1: State the standard cell potential equation: .
- Step 2: Identify the electrodes: Copper has a higher reduction potential () and undergoes reduction at the cathode; hydrogen is oxidized at the anode ().
- Step 3: Calculate: .
Answer
.
Why not the others: '' inverts cathode and anode; '' divides by the number of electrons; '' incorrectly multiplies potential by stoichiometry.
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