Question

Question #dcd39

Answer 1

The free energy change `DeltaG` of a chemical reaction is related with Enthalpy change `DeltaH`, Entropypy change `DeltaS` and the absolute temperature `T` of the reaction as follows

`DeltaG=DeltaH-T DeltaS`

The combustion reaction of hydrocarbon exothermic one.
So `DeltaH <0` again as per given balanced equation the number of moles of gaseous product (12moles) is greater than that of gaseous reactants (9moles). So `DeltaS>0` and `T>0`

So as a whole RHS `DeltaH-T DeltaS<0`

Hence the free energy change of the reaction

`DeltaG<0->"The reaction is spontaneous"`