The standard free energy change of a reaction (ΔG˚rxn) is given by the following equation:
The balanced equation for the oxidation of SO2 is:
SO2(g) + 1/2 O2(g) → SO3(g)
We’re given the ΔH˚f and S˚ of each reactant and product. We can use those to calculate for ΔH˚rxn and ΔS˚rxn separately.
Consider the oxidation of SO2 to SO3:
SO2 (g) + 1/2 O2 (g) → SO3 (g)
Calculate ΔGºrxn at 25 C.
Express your answer to one decimal place with the appropriate units.
Determine whether the reaction is spontaneous at standard conditions.
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