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MCQMediumJEE Main 2025 · 23 January, Shift 1Electrochemical Cells

Chemistry Question from JEE Main 2025 · 23 January, Shift 1

Electrode potential diagram showing FeO4^{2-} to Fe^{3+} with +2.0 V, Fe^{3+} to Fe^{2+} with 0.8 V, and Fe^{2+} to Fe^0 with -0.5 V along arrows.

In the above diagram, the standard electrode potentials are given in volts (over the arrow). The value of EFeO42−/Fe2+∘E^\circ_{FeO_4^{2-}/Fe^{2+}} is:

  • A

    1.7 V1.7 \, \text{V}

  • B

    1.2 V1.2 \, \text{V}

  • C

    2.1 V2.1 \, \text{V}

  • D

    1.4 V1.4 \, \text{V}

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