Which of the following expressions summarizes the correct relationship between the free energy change,DG°,and the equilibrium constant,K_eq? A)K_eq 1 when DG° 0 B)K_eq 1 when DG°

Question

Which of the following expressions summarizes the correct relationship between the free energy change,DG°,and the equilibrium constant,K_eq? A)K_eq > 1 when DG° > 0 B)K_eq > 1 when DG° < 0 C)K_eq < 1 when DG° < 0 D)K_eq < 1 when DG° = 0

Quizplus · Accepted Answer

The relationship between DG° and K(eq) is given by the equation DG° = -RTlnK(eq). When DG° <0, lnK(eq) is negative and therefore K(eq) must be greater than 1 in order for the expression to be true. Conversely, when DG°>0, lnK(eq) is positive and K(eq) must be less than 1 for the expression to be true. Therefore, choice B is the correct answer.

Which of the Following Expressions Summarizes the Correct Relationship Between