39. 10 moles of gaseous reactant A dimerize to B in a syringe isothermally. The total Gibbs free energy (G) of the equilibrium state is marked in the right graph. Assuming both A and B behave like an ideal gas, predict the change in G of this system after pressing the piston (the new equilibrium state is marked as #).


(A)
(B)
(C)
(D)
(E)

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