What are the delta G° values for the following reactions at 25°C?

Question

1. C2H4(g) + H2(g) --> C2H6(g)
2. SO3(g) + CaO(s) --> CaSO4(s)
3. FeO(s) + H2(g) --> Fe(s) + H2O(g)
4. CdO(s) + 2HCl(g) --> CdCl2(s) + H2O(l)

Answer 1

Data required.