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At 25 °C, the equilibrium partial pressures for the following reaction were found to be PA = 4.90 bar, PB = 4.00 bar, PC = 9.30 bar, and PD = 3.20 bar. 2A(g) + 2B(g) --> C(g) + 3D(g) What is the standard change in Gibbs free energy of this reaction at 25 °C. Hint: The equilibrium constant is related to the change in Gibbs free energy

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