Using data from appendix c in the textbook calculate g for

Question

Using data from Appendix C in the textbook, calculate ΔG° for the following reactions. Indicate whether each reaction is spontaneous under standard conditions.

1. 2SO2(g)+O2(g)→2SO3(g)
2. NO2(g)+N2O(g)→3NO(g)
3. 6Cl2(g)+2Fe2O3(s)→4FeCl3(s)+3O2(g)
4. SO2(g)+2H2(g)→S(s)+2H2O(g)