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Electricity needed to reduce given moles of dichromate or permanganate

The same question, asked 3 times: 3 May 2023 S1*, 4 May 2023 S1*, 25 Apr 2025 S2. Every wording below, oldest first.

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  1. Question 1

    3 May 2023 S1

    79
    Calculate the amount of electricity required to convert 1.1 mol of Cr2O72−\text{Cr}_2\text{O}_7^{2-} to Cr3+\text{Cr}^{3+} in acidic medium.

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  2. Question 2

    4 May 2023 S1

    99
    Calculate the amount of electricity required in coulombs to convert 0.08 mol of MnO4−\text{MnO}_4^- to Mn2+\text{Mn}^{2+}.

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  3. Question 3

    25 Apr 2025 S2

    53
    What is the charge required to convert 2 molKMnO42\text{ }molKMnO_{4} to MnSO4MnSO_{4} ?

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