Biochemistry 4th Edition by Reginald Garrett, Charles Grisham

Exercise 5

Calculating the effect of pH on G°
ATP hydrolysis at pH 7.0 is accompanied by release of a hydrogen ion to the medium
ATP 4- + H₂ O ADP 3- + HPO₄ 2- + H +
If the G°' for this reaction is -30.5 kJ/mol, what is G° (that is, the free energy change for the same reaction with all components, including H + , at a standard state of 1 M)