For the hydrolysis of ATP to ADP + i, the free-energy change is -7.3 kcal/mol under standard conditions (1 M concentration of both reactants and products). In the cellular environment, however, the free-energy change is about -13 kcal/mol. What can we conclude about the free-energy change for the formation of ATP from ADP and i under cellular conditions?
(a)- It is about +13 kcal/mol.
(b)- It is less than +7.3 kcal/mol.
(c)- It is +7.3 kcal/mol.
(d)-It is about +26 kcal/mol.