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Using the Data Given Below Estimate the Value of the Gibbs

Question 40

Multiple Choice

Using the data given below estimate the value of the Gibbs energy change of reaction at 325 K, for the following reaction:
N2 (g) + 2 O2 (g) → 2 NO2 (g)
N2( g) O2( g) NO2( g) ΔfH298/kJmol100+33.2S298/JK1 mol1191.6205.1240.1Cp/JK1 mol129.129.437.2\begin{array}{|l|c|c|c|}\hline & \mathrm{N}_{2}(\mathrm{~g}) & \mathrm{O}_{2}(\mathrm{~g}) & \mathrm{NO}_{2}(\mathrm{~g}) \\\hline \Delta_{\mathrm{f}} H_{298}^{\circ} / \mathrm{kJ} \mathrm{mol}^{-1} & 0 & 0 & +33.2 \\\hline S_{298}^{\circ} / \mathrm{J} \mathrm{K}^{-1} \mathrm{~mol}^{-1} & 191.6 & 205.1 & 240.1 \\\hline C_{\mathrm{p}} / \mathrm{JK}^{-1} \mathrm{~mol}^{-1} & 29.1 & 29.4 & 37.2 \\\hline\end{array}


A) + 26.1.
B) + 105.9.
C) + 102.6.
D) + 40.

Correct Answer:

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