A reaction is spontaneous if free energy change DeltaG , for the reaction is negative . The question arises, how we can explain , the spontaneous of reversible reaction taking the example of dissociation equilibrium N_2O_4 hArr 2NO_2(g) the variation of free energy with the fractionof N_2O_4 dissociated under standard conditions is shown in the figure below. When 1 mole of N_2O_4 changes into the equilibrium mixture the volume of DeltaG^@ is

A reaction is spontaneous if free energy change DeltaG , for the react

1.	A reaction is spontaneous if free energy change DeltaG , for the reaction is negative . The question arises, how we can explain , the spontaneous of reversible reaction taking the example of dissociation equilibrium N_2O_4 hArr 2NO_2(g) the variation of free energy with the fractionof N_2O_4 dissociated under standard conditions is shown in the figure below. When 1 mole of N_2O_4 changes into the equilibrium mixture the volume of DeltaG^@ is
Answer» 0.84 kJ `-0.84 kJ` 5.40 0.84 kJ 0.84-5.40 kJ Solution :The lowest POINT of the plot REPRESENTS EQUILIBRIUM mixture. When 1 mole of `N_2O_4` changes into equilibrium mixtture , free ENERGY is LOWERED by 0.84 kJ, `DeltaG=-0.84 KJ`.