In a galvanic cell with standard hydrogen electrode (SHE, ) and copper electrode (, ), what is the standard cell potential ?

Answer and explanation

Correct answer: A.

  1. Step 1: State the standard cell potential equation: .
  2. Step 2: Identify the electrodes: Copper has a higher reduction potential () and undergoes reduction at the cathode; hydrogen is oxidized at the anode ().
  3. 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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