The highest value of T at which the reaction is spontaneous is equal to the ratio of ∆H and ∆S.
T = ∆H/∆S
The equation for the formation of sulfur trioxide from sulfur dioxide is as follows:
2SO₂ + O₂ --- 2SO₃
The standard free energy change (∆Gº) of a chemical reaction is defined as the amount of energy which is released in the conversion of reactants into products under standard conditions.
Enthalpy change is defined as the amount of heat which is evolved or absorbed in a reaction carried out at constant pressure.
If the value ∆G° is negative, so the process will be spontaneous.
∆G° = ∆H - T∆S
where,
∆H is the enthalpy change.
∆S is the change in entropy.
At ∆G° = 0
0 = ∆H - T∆S
∆H = T∆S
T = ∆H/∆S
Thus, we concluded that the highest value of T at which the reaction is spontaneous is the ratio of ∆H and ∆S.
learn more about standard free energy change:
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