A direct methanol fuel cell has the following reactions: Anode: CH3OH + H2O = CO2 +6H +6e? Cathode: 3/2O? + 6H + 6e? =H2O Cell: CH3OH + 3/2O? = CO2 + 2 H2O SPecie ?H(KJ/Mole) ?S(J/Mole.K) CH3OH -245.98 239.83 O2 0 205.14 CO2 -393.51 213.80 H2O -285.83 69.95 a)calculate the overall enthalpy of the reaction b)calculate the overall entropy of the reaction c)calculate the overall free energy of the reaction. d)calculate the standard call potential of the reaction.

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\begin{tabular}{|l|l|l|} \hline SPecie &

? H (KJ / Mole)

&

? S (J / Mole / K)

\\ \hline

CH 3 OH

& -245.98 & 239.83 \\ \hline

O 2

& 0 & 205.14 \\ \hline

CO 2

& -393.51 & 213.80 \\ \hline

H 2 O

& -285.83 & 69.95 \\ \hline \end{tabular}

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