Determine the value of G for the reaction of the fuel gas acetylene with hydrogen gas: C 2 H 2 (g) + 2H 2 (g)

Determine the value of ΔG° for the reaction of the fuel gas acetylene with hydrogen gas:

 C₂H₂ (g) + 2H₂ (g) —> C₂H₆ (g) 

given the following thermodynamic properties at 25°C: 

C2H2(g) H2(g) C2H6(g) AH; (kJ/mol) 226.7 -84.7 S [J/(mol K)] 200.8 130.6 229.5