engineering chemistry MCQ #2799

For a cell: Pt | H₂ (1 atm) | H⁺ (1 M) || Cu²⁺ (1 M) | Cu, E°cell = +0.34 V. The E° for Cu²⁺/Cu is

engineering chemistry MCQ #2799

  1. Question 1

    Q1. For a cell: Pt | H₂ (1 atm) | H⁺ (1 M) || Cu²⁺ (1 M) | Cu, E°cell = +0.34 V. The E° for Cu²⁺/Cu is

    • A) +0.34 V
    • B) -0.34 V
    • C) +0.68 V
    • D) -0.68 V

    Answer: +0.34 V

    Explanation: E°cell = E°(cathode) - E°(anode), E°(anode) = 0 V for SHE, so E°cell = E°(Cu²⁺/Cu) = +0.34 V.