Question

er at initial change (AG The standard free energy change (AG) for ATP hydrolysis is -30.5 kJ/ mol ATP, ADP, and I are mixed together at initial concentrations of 1 M each then left alone until the reaction below has come to equilibrium. For each species (ie. ATP. ADP and P.) indicate whether the concentration will be equal to 1 M, less than 1 M, or greater than 1 M after the reaction had reached equilibrium. Explain why. ATP + H2O → ADP+P equal to 1 M, less thanch species (ie. ATP, ADP. (ATP) 1 M because (ADP) 1 M because [P] 1 M because 4. Is the standard free energy change (AG) for the hydrolysis of ATP the same as the actual free energy change (AG) that would occur in a cell? Why or why not? 5. Cellular ATP concentrations are maintained well above equilibrium concentrations in cells. Explain how high cellular ATP concentration relates to actual free energy changes (AG) for ATP hydrolysis relative to the standard free energy change (AG").

Answer 1

Dirst we need to calculate lequilibrium constant AG = - R T ln Ke - 30500 J = 8.314x298 K hake K = 221903 reaction Complete reactant is almost! ie amant should be & negligible

ATP should be less than 1M because the value of Kc is very high and reactant should be almost negligible

ADP should be greater than 1 M as almost all the reactant is converted to product

P_{​​​​​​i} should be greater than 1 almost all the reactant are converted to product