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Standard emf of a cell from the standard Gibbs energy change of its reaction

The same question, asked 2 times: 20 Apr 2025 S2*, 21 Apr 2025 S2. Every wording below, oldest first.

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  1. Question 1

    20 Apr 2025 S2

    51
    Assume the cell reaction, A(s)+B(aq)+2⟶ A(aq)+2+B(s)A_{(s)}+B_{(aq)}^{+ 2}\longrightarrow{\text{ }A}_{(aq)}^{+ 2}+B_{(s)}if ΔG∘=−386 kJ\Delta G^{\circ}= - 386\text{ }kJ at 298 K . What is Ecell 0E_{\text{cell~}}^{0} ?

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  2. Question 2

    21 Apr 2025 S2

    98
    For cell reaction, 2Al(s)+3Cu+2 (aq)⟶2Al+3 (aq)+3Cu(s)2Al_{(s)}+ 3Cu^{+ 2}\ _{(aq)}\longrightarrow 2Al^{+ 3}\ _{(aq)}+ 3Cu_{(s)}If G∘=−1158 kJG^{\circ}= - 1158\text{ }kJ, what is Ecell ∘E_{\text{cell~}}^{\circ} ?

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