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ChemistryOAU Post UTME

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Earlier discussion

4 older comments kept for context.

Ojo Sarah

Ojo Sarah

Aderogba Qudus

ΔG = nFe
n = 2
e = 0.042 – 0.012 = 0.03
ΔG = 2×96500×0.03 = 5,790J = 5.79KJ

John Oyekanmi

\( E^{o}{cell} = E^{o}{cathode} -E^{o}{anode} \)
\( E^{o}
{cell} = 0.042V -0.012V = 0.03V \)

n(number of electrons) = 2, F (Faraday) = 96500Columbs
∴ using \( \triangle G = -nFE^{o}_{cell} \)
\( \triangle G \) = \( -1 \times 2 \times 96500 \times 0.03 \)
\( \triangle G \) = 5790J = 5.79KJ.

∴ The Correct Answer is B.

John Oyekanmi

\(E^{o}{cell} = E^{o}{cathode} -E^{o}{anode}\)
\(E^{o}
{cell}\) = 0.042V -0.012V = 0.03V

n(number of electrons) = 2, F (Faraday) = 96500Columbs

\( \therefore \) using
\( \triangle G = -nFE^{o}_{cell} \)
\( \triangle G = -1 \times2\times96500\times0.03 \)
\( \triangle G \) = 5790J = 5.79KJ

\( \therefore \) The Correct Answer is B.