31. The relationship of free-energy change (AG) to the concentrations of reactants and products is important because it

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31 The Relationship Of Free Energy Change Ag To The Concentrations Of Reactants And Products Is Important Because It 1 (65.79 KiB) Viewed 81 times

31. The relationship of free-energy change (AG) to the concentrations of reactants and products is important because it predicts the direction of spontaneous chemical reactions. Consider, for example, the hydrolysis of ATP to ADP and inorganic phosphate (P). The standard free-energy change (AG) for this reaction is -7.3 kcal/mole. The free-energy change depends on concentrations according to the following equation AG = AGⓇ + 1.42 log10 ((ADP) PVATP]) In a resting muscle the concentrations of ATP, ADP, and Pare approximately 0.005 M, 0.001 M, and 0 010 M respectively. At [P] = 0.010 M, what will be the ratio of [ATP] to (ADP) at equilibrium? 7.2 x 10 -8 a b 1.38 106 C 1 d 5.14