2. An important metabolic step is the conversion of fumarate to malate. fumarate +H2O malate (possible by fumarase) at 25C,K=(aFaM)=4.0 The activity of malate is aM, and activity of fumarate aF, defined on the molarity concentration scale ( a=c in dilute solution). a) What is the standard Gibbs free-energy change for the reaction at 25C ? b) What is the Gibbs free-energy change for the reaction at equilibrium? c) What is the Gibbs free-energy change when 1mol of 0.100M fumarate is converted to 1mol of 0.100M malate? d) What is G when 2mol of 0.100M fumarate are converted to 2 mol of 0.100M malate? e) If K=8.0 at 35C, calculate the standard enthalpy change for the reaction; assume that enthalpy is independent of temperature. f) Calculate the standard entropy change for the reaction; assume that rS is independent of temperature