Balanced Reaction: 2 SO_{2}(g) + O_{2}(g) → 2 SO_{3}(g)

$\overline{){\mathbf{\u2206}}{{\mathbf{H}}}_{{\mathbf{rxn}}}{\mathbf{=}}{\mathbf{\u2206}}{{\mathbf{H}}}_{\mathbf{f}\mathbf{,}\mathbf{products}}{\mathbf{-}}{\mathbf{\u2206}}{{\mathbf{H}}}_{\mathbf{f}\mathbf{,}\mathbf{reactants}}}$

You may want to reference (Pages 186 - 190)Section 5.7 while completing this problem.

Given 2 SO_{2}(g) + O_{2}(g) → 2 SO_{3}(g), which of the following equations is correct?

(a) ΔH˚_{f}[SO_{3}] = ΔH˚_{rxn} – ΔH˚_{f}[SO_{2}]

(b) ΔH˚_{f}[SO_{3}] = ΔH˚_{rxn} + ΔH˚_{f}[SO_{2}]

(c) 2ΔH˚_{f}[SO_{3}] = ΔH˚_{rxn} + 2ΔH˚_{f}[SO_{2}]

(d) 2ΔH˚_{f}[SO_{3}] = ΔH˚_{rxn} – 2ΔH˚_{f}[SO_{2}]

(e) 2ΔH˚_{f}[SO_{3}] = 2ΔH˚_{f}[SO_{2}] – ΔH˚_{rxn}

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