Cells use the hydrolysis of adenosine triphosphate (ATP) to adenosine diphosphat

Question

Cells use the hydrolysis of adenosine triphosphate (ATP) to adenosine diphosphate (ADP) as a source of energy. Symbolically, this reaction can be represented as ATP (aq) + H_2O (l) reversiblearrow ADP (aq) + H_2PO_4 (aq) For this reaction, delta G degree = -30.5 kJ/mole. Calculate K, the equilibrium constant, at 25 degree C. K = If all of the free energy from the metabolism of glucose goes into converting ADP back to ATP, how many moles of ATP can be produced for every mole of glucose? Moles ATP =

Explanation / Answer

a)DeltaG = -RTlnK

-30.5*10^3 J/mol = -8.314*298*lnK

K= 2.22*10^5

b) DeltaG reaction = DeltaG of products- delta G of reactants = 6*CO2 + 6* H2O -C6H12O6

= -6*(394.39+237.14)+910.56 KJ/mol

=-2878.62 KJ/mol

-2878.62 = n*(-30.5)

n= 94.38

94.38 moles of ADP is converted in to ATP

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