The hydrolysis of ATP to form ADP requires energy to break the bonds initially, but releases more energy as bond are remade making the reaction exothermic overall. The Gibbs free energy for this reaction is -30.5 kJ/mole, meaning that it is also exergonic (ΔG=-). This energy can be used by other biological systems if this reaction is coupled with another less favorable one. In this case, the creation of glucose-6-phosphate, C6H10O9P, this is a pivotal intermediate in many biochemical pathways. PO43- + C6H12O6 ⇌ H2O + C6H10O9P ΔG° = +13.8 kJ/mole ATP + H2O ⇌ ADP + PO43- ΔG° = -30.5 kJ/mole A) What is the overall reaction that takes place? B) Calculate the ΔG° for this reaction C) Will this be a successful coupled reaction?
The hydrolysis of ATP to form ADP requires energy to break the bonds initially, but releases more energy as bond are remade making the reaction exothermic overall. The Gibbs free energy for this reaction is -30.5 kJ/mole, meaning that it is also exergonic (ΔG=-). This energy can be used by other biological systems if this reaction is coupled with another less favorable one. In this case, the creation of glucose-6-phosphate, C6H10O9P, this is a pivotal intermediate in many biochemical pathways. PO43- + C6H12O6 ⇌ H2O + C6H10O9P ΔG° = +13.8 kJ/mole ATP + H2O ⇌ ADP + PO43- ΔG° = -30.5 kJ/mole A) What is the overall reaction that takes place? B) Calculate the ΔG° for this reaction C) Will this be a successful coupled reaction?
Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The hydrolysis of ATP to form ADP requires energy to break the bonds initially, but releases more
energy as bond are remade making the reaction exothermic overall. The Gibbs free energy for this
reaction is -30.5 kJ/mole, meaning that it is also exergonic (ΔG=-). This energy can be used by other
biological systems if this reaction is coupled with another less favorable one. In this case, the creation of
glucose-6-phosphate, C6H10O9P, this is a pivotal intermediate in many biochemical pathways.
PO43- + C6H12O6 ⇌ H2O + C6H10O9P ΔG° = +13.8 kJ/mole
ATP + H2O ⇌ ADP + PO43- ΔG° = -30.5 kJ/mole
A) What is the overall reaction that takes place?
B) Calculate the ΔG° for this reaction
C) Will this be a successful coupled reaction?
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