what is the free energy change of the hydrolysis of atp to adp
ATP hydrolysis Hydrolysis of the terminal phosphoanhydridic bond is a highly exergonic process, releasing 30.5 kJ mol−1 of energy. This reaction can then be coupled with thermodynamically unfavorable reactions to give an overall negative (spontaneous) change in Gibbs free energy (ΔG) for the reaction sequence. The actual value of ΔG for ATP hydrolysis varies, primarily depending on Mg2+ concentration, and under normal physiologic conditions is actually closer to -50 kJ mol−1.