One important reaction in the citric acid cycle is

Write the equilibrium constant expression for the above reaction. Given that the concentrations of [citrate(aq)] = 0.00128 M, [aconitate(aq)] = 4.0 x 10^-5 M, and [H₂O] = 55.5 M, calculate the reaction quotient. Is this reaction at equilibrium? If not, in which direction will it proceed?

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citrate(aq) aconitate(aq) + H₂O(1) K = 0.031