More free energy! the isomerization of dihydroxyacetone phosphate (dhap) to glyceraldehyde 3-phosphate (gap) has an equilibrium constant of 0.0475 under standard conditions (298 k, ph 7). calculate for the isomerization. next, calculate for this reaction when the initial concentration of dhap is and the initial concentration of gap is . what do these values tell you about the importance of compared with that of in understanding the thermodynamics of intracellular reactions?