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Using the Data Given Below Estimate the Value of the Gibbs

Question 36

Multiple Choice

Using the data given below estimate the value of the Gibbs energy change of reaction (kJ mol-1) at 310 K, for the following reaction:
CH3CH2OH (l) + O2 (g) → CH3CO2H (l) + H2O (l)
CH3CH2OH(l) O2( g) CH3CO2H(I) H2O(l) ΔfH298/kJmol1277.60484.5285.8S298/JK1 mol1159.9205.1158.069.9Cp/JK1 mol1111.529.4123.175.3\begin{array}{|c|c|c|c|c|}\hline & \begin{array}{c}\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH} \\(\mathrm{l}) \end{array} & \mathrm{O}_{2}(\mathrm{~g}) & \mathrm{CH}_{3} \mathrm{CO}_{2} \mathrm{H}(\mathrm{I}) & \mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \\\hline \Delta_{\mathrm{f}} H_{298}^{\circ} / \mathrm{kJ} \mathrm{mol}^{-1} & -277.6 & 0 & -484.5 & -285.8 \\\hline S_{298}^{\circ} / \mathrm{JK}^{-1} \mathrm{~mol}^{-1} & 159.9 & 205.1 & 158.0 & 69.9 \\\hline C_{p} / \mathrm{J} \mathrm{K}^{-1} \mathrm{~mol}^{-1} & 111.5 & 29.4 & 123.1 & 75.3 \\\hline\end{array}


A) - 450.2
B) - 451.8.
C) -41.7.
D) -533.8.

Correct Answer:

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