Gastric juice (ph 1.5) is produced by pumping hcl from blood plasma (ph 7.4) into the stomach. calculate the amount of free energy required to concentrate the h+ in 1 l of gastric juice at 37 degrees c. under cellular conditions, how many moles of atp must by hydrolyzed to provide this amount of free energy? the free energy change for atp hydrolysis under cellular conditions is about -58 kj/mol. ignore the effects of the transmembrane electrical potential.