Finding Entropy using Van't Hoff Eq

[ssendhil]

Question 11.82 asks:

1.1 mMol of SO2 + 2.2 mMol O2 gas in 250 mL container. It's heated to 500 K and allowed to reach equilibrium. Which way will the equilibrium shift if it is then cooled to 298 K.

By manipulating the variables in the Van't Hoff Equation we can find the standard H and tell which way the reaction will go if we lose temperature, but I am stuck at how to find entropy for this.

Thanks.

[Chem_Mod]

I am unsure why you would need to calculate entropy to answer this question. Consider the fact that the equilibrium constant K increases when this reaction is cooled. Therefore, we expect more sulfur trioxide product to form at 298 K.