If standard reduction potentials $(E^0)$ of $(Al^{+3}(aq)|Al(s))$, $(Fe^{+2}(aq)|Fe(s))$, $(Cu^{+2}(aq)|Cu(s))$ and $(Ag^{+1}(aq)|Ag(s))$ are $-1.66 \text{ V}$, $-0.44 \text{ V}$, $+0.34 \text{ V}$ and $+0.79 \text{ V}$ respectively, which of the following reactions is non-spontaneous?
- A$2Ag(s) + Fe^{+2}(aq) \rightarrow 2Ag^{+}(aq) + Fe(s)$
- B$2Al(s) + 3Cu^{+2}(aq) \rightarrow 2Al^{+3}(aq) + 3Cu(s)$
- C$Fe(s) + Cu^{+2}(aq) \rightarrow Fe^{+2}(aq) + Cu(s)$
- D$2Al(s) + 3Fe^{+2}(aq) \rightarrow 2Al^{+3}(aq) + 3Fe(s)$
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$Pt_{(s)} \mid H_{2(g)} (1 \, bar) \mid H^+_{(1 \, M)} \parallel Cu^{2+}_{(1 \, M)} \mid Cu_{(s)}$
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$E_{Cell}^0 = +0.5332 \ V$.
The value of $\Delta_f G^0$ in $kJ \ mol^{-1}$ (nearest integer) is:
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