Evaluate g-o at 298 K for the reaction H2 + (1/2)O2 H2O using (a) Fundamental definition

Evaluate Δg-o at 298 K for the reaction H2 + (1/2)O2 ↔ H2O using
(a) Fundamental definition using formation enthalpy (h-o f) and entropy (s-o) values, and
(b) Using formation Gibbs function from Table G-1.