Multiple Choice
In the context of Gibbs free energy and ATP hydrolysis, where is most of the usable free energy of ATP primarily associated?
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1. Introduction to Biochemistry
Gibbs Free Energy
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Consider a reaction where Keq=1.6 but Q = 3.19. What direction will the reaction proceed?
A
Forward.
B
Reverse.
C
Forward & reverse reactions proceed equally.
D
Not enough information provided to make conclusions.
Verified step by step guidance1
Understand the concept of equilibrium constant (Keq) and reaction quotient (Q). Keq is the ratio of the concentration of products to reactants at equilibrium, while Q is the same ratio at any point in time.
Compare the values of Keq and Q. If Q < Keq, the reaction will proceed in the forward direction to reach equilibrium. If Q > Keq, the reaction will proceed in the reverse direction.
In this problem, Keq is given as 1.6 and Q is given as 3.19.
Since Q (3.19) is greater than Keq (1.6), the reaction will proceed in the reverse direction to reach equilibrium.
Conclude that the reaction will shift towards the reactants to decrease the value of Q until it equals Keq.
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