Consider the equation ∆G = ∆G ° + RT ln( Q ). What is the value of ∆ G for a reaction at equilibrium? What does Q equal at equilibrium? At equilibrium, the previous equation reduces to ∆G° = − RT ln( K ). When ∆ G ° > 0, what does it indicate about K ? When ∆G ° < 0, what does it indicate about K? When t ∆ G ° = 0, what does it indicate about K ? ∆G predicts spontaneity for a reaction, whereas ∆G ° predicts the equilibrium position. Explain what this statement means. Under what conditions can you use ∆ G ° to determine the spontaneity of a reaction?
Consider the equation ∆G = ∆G ° + RT ln( Q ). What is the value of ∆ G for a reaction at equilibrium? What does Q equal at equilibrium? At equilibrium, the previous equation reduces to ∆G° = − RT ln( K ). When ∆ G ° > 0, what does it indicate about K ? When ∆G ° < 0, what does it indicate about K? When t ∆ G ° = 0, what does it indicate about K ? ∆G predicts spontaneity for a reaction, whereas ∆G ° predicts the equilibrium position. Explain what this statement means. Under what conditions can you use ∆ G ° to determine the spontaneity of a reaction?
Consider the equation ∆G = ∆G° + RT ln(Q). What is the value of ∆G for a reaction at equilibrium? What does Q equal at equilibrium? At equilibrium, the previous equation reduces to ∆G° = −RT ln(K). When ∆G° > 0, what does it indicate about K? When ∆G° < 0, what does it indicate about K? When t ∆G° = 0, what does it indicate about K? ∆G predicts spontaneity for a reaction, whereas ∆G° predicts the equilibrium position. Explain what this statement means. Under what conditions can you use ∆G° to determine the spontaneity of a reaction?
The equilibrium constant, Keq, for the isomerization of dihydroxyacetone phosphate (DHAP) to glyceraldehyde 3-phosphate (GAP) is 0.0475 under standard conditions (298 K, 1 atm, pH 7). Calculate ∆G ̊’ for the reaction.
What is ∆G’ for the isomerization reaction when the initial concentrations of DHAP and GAP are 2.2 ́ 10-4 M and 2.9 ́ 10-6 M, respectively? Assume a temperature of 298 K. The same enzyme catalyzes the reverse reaction, the isomerization of GAP to form DHAP. Assume the concentration of GAP remains constant at 2.9 ́ 10-6 M. What is the maximum concentration of DHAP that allows the reaction to proceed spontaneously in this direction?
At 460 K, ∆G = -14.10 kJ/mol for the reaction 2 A (g) → B (g). If the partial pressures of A and B are 7.20 atm and 0.420 atm respectively, what is ∆G° for this reaction?
A student determines the value of the equilibrium constant to be 4.03×10-18 for the following reaction.Fe3O4(s) + 4H2(g)3Fe(s) + 4H2O(g)Based on this value of Keq:G° for this reaction is expected to be (greater, less) fill in the blank 1 than zero.Calculate the free energy change for the reaction of 2.37 moles of Fe3O4(s) at standard conditions at 298K. G°rxn = kJ
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