Calculate the standard free energy change for the following metabolically important enzyme-catalyzed reaction at 25°C andpH 7 using the indicated equilibrium constant: glyceraldehyde 3-phosphate?dihydroxyacetone phosphate; K'eq =21 As we shall see later in the semester, the physiologicaldirection of this reaction is towards glyceraldehyde-3-phosphate.Indicate why this seems odd and suggest how this can that be, froma thermodynamic perspective?