For the Reaction 2 SO₂(g) + O₂(g) $\rarr$ 2 SO₃(g), If Initially P(SO₂) = 1

Multiple Choice

For the reaction 2 SO₂(g) + O₂(g) $\rarr$ 2 SO₃(g) , if initially P(SO₂) = 1.2 atm, P(O₂) = 1.8 atm, and P(SO₃) = 2.1 atm, calculate $\Delta$ G for this reaction at 25 ^$\circ$ C. The following data is valid at 25 ^$\circ$ C: $\begin{array}{|l|l|}\hline & \Delta \mathrm{G}_{\mathrm{f}}{ }^{\circ}(\mathrm{kJ} / \mathrm{mol}) \\\hline \mathrm{SO}_{2} & -300.4 \\\hline \mathrm{SO}_{3} & -370.4 \\\hline\end{array}$

A) -140.0 kJ/mol
B) -137.6 kJ/mol
C) -138.7 kJ/mol
D) 1,174.7 kJ/mol
E) -141.3 kJ/mol