Because of Recent Advances in Recovery Technology, the Supply of Natural

question 52

Essay

Because of recent advances in recovery technology, the supply of natural gas, which is mostly methane, has increased significantly. If 1 mole of methane is consumed in a fuel cell powering an automobile, estimate the maximum amount of work that can be produced by the electric motor. The data in the table below may be helpful. $\begin{array} { l l l l } \text { Species } &\Delta^{H_{\mathrm{f}}^{\circ}} & S^{\circ} &\Delta^{G_{\mathrm{f}}^{\circ}}\\\mathrm { CH } _ { 4 } ( g ) & - 75 \mathrm {~kJ} \mathrm {~mol} ^ { - 1 } & 186 \mathrm {~J} \mathrm {~mol} ^ { - 1 } \mathrm {~K} ^ { - 1 } & - 51 \mathrm {~kJ} \mathrm {~mol} ^ { - 1 } \\ \mathrm { O } _ { 2 } ( g ) & 0 & 205 & 0 \\ \mathrm { H } _ { 2 } \mathrm { O } ( g ) & - 242 & 189 & - 229 \\ \mathrm { CO } _ { 2 } ( g ) & - 394 & 214 & - 394 \end{array}$

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Definitions:

Long-Term Liabilities

Debts or obligations that are due more than one year in the future.