(1) CH3CHO(g)+2H2(g)C2H6(g)+H2O(l);H=204.0kJ (2) 2H2(g)+O2(g)2H2O(g);H=484.0kJ (3) 2C2H5OH(l)+O2(g)2CH3CHO(g)+2H2O(l);H=348.0kJ (4) H2O(l)H2O(g);H=44.0kJ (5) 2C2H5OH(l)4C(s)+6H2(g)+O2(g);H=555.0kJ Hf=kJ b. From appropriate entropy data, calculate S for the formation of ethane 2C(s)+3H2(g)C2H6(g)S(C(s))=5.74J/(molK)S(H2(g))=130.6J/(molK)S(C2H6(g))=229.5J/(molK)S=J/K c. Calculate Gf for ethane at 25C