Consider the combustion of ethane (C₂H₆) :
C₂H₆( g ) + O₂( g ) → CO₂( g ) + H₂O( l )

If Δ G ° (in kJ/mol) for: C₂H₆( g ) = − 32.9, O₂( g ) = 0, CO₂( g ) = − 394.4, and H₂O( l ) = − 237.2; calculate Δ G ° for the reaction.

Question

Quizplus · Accepted Answer

ΔG° = ΣΔG°(products) - ΣΔG°(reactants)ΔG° = [ΔG°(CO2) + ΔG°(H2O)] - [ΔG°(C2H6) + ΔG°(O2)]ΔG° = [(-394.4 kJ/mol) + (-237.2 kJ/mol)] - [(-32.9 kJ/mol) + (0 kJ/mol)]ΔG° = -631.6 kJ/mol + 32.9 kJ/molΔG° = -598.7 kJ/mol

Consider the Combustion of Ethane (C2H6): ​

Consider the Combustion of Ethane (C₂H₆):