The electrode potentials are given as follows:
$Fe_{(aq)}^{3+} + e^- \to Fe_{(aq)}^{2+}$; $E^o = 0.771 \, V$
$I_{2(s)} + 2e^- \to 2I_{(aq)}^-$; $E^o = 0.536 \, V$
For the cell reaction $2Fe_{(aq)}^{3+} + 2I_{(aq)}^- \to 2Fe_{(aq)}^{2+} + I_{2(s)}$,the value of $E^o_{cell}$ is:

  • A
    $(2 \times 0.771 - 0.536) = 1.006 \, V$
  • B
    $(0.771 - 0.5 \times 0.536) = 0.503 \, V$
  • C
    $0.771 - 0.536 = 0.235 \, V$
  • D
    $0.536 - 0.771 = -0.235 \, V$

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