The standard free energy change for the hydrolysis of ATP is -30.5 kJ .

ATP(aq)+ H₂O(l)→ADP(aq)+ P i (aq)

In a particular cell, the concentrations of ATP , ADP , and P i are 0.0031 M , 0.0010 M , and 0.0051 M , respectively. Calculate the free energy change for the hydrolysis of ATP under these conditions. (Assume a temperature of 298 K .)