You are interested in the reaction 2A B + C. You add 10.0 mM A to a solution containing an enzyme that catalyzes this reaction and let it come to equilibrium at 25C. You measure the following concentrations: [A] = 2.0 mM, [B] = 4.0 mM, and [C] = 4.0 mM.

a. What is the equilibrium constant (K_eq) for this reaction?

b. What is the standard free energy change (G) for this reaction?

c. Is this reaction thermodynamically spontaneous in the direction written under standard conditions?

d. What would be the free energy change (G) for the reaction in question 2 if you combine 1.0 mM A, 4.5 mM B, and 4.5 mM C at 25C?

e. In which direction would this reaction proceed if you now added an enzyme to catalyze this reaction? Explain.