17. Which of the following expressions summarizes the correct relationship between the free energy change, AG°, and the equilibrium constant, Keq? A) Keq >1 when AG° >0 B) Keq >1 when AG° < 0 C) Keq <1 when AG° < 0 D) Keq <1 when AG° = 0 18. Which of the Keq corresponds to the lowest value of AG°? A) Ke= 103 B) Keg = 10² C) Keq = 10-' D) AG° cannot be determined 19. Which of the Keq corresponds to the highest value of AG°? A) Keg = 101 B) Keq= 10² C) Keq= 103 D) Keq = 10s 20. Which of the Keq corresponds to the most negative value of AG°? A) Keg =1 B) Keq = 10' C) Keg = 10² D) Keq = 10³ 21. Which of the following statements is true? A) The product is favored in reaction in which AH° is a positive value. B) Entropy decreases when an acyclic compound forms a ring. C) In homolytic bond cleavage, entropy decreases and favors formation of products. D) The starting material is favored in a reaction in which AH° is a negative value. 22. Which of the following statements is true? A) The size of the activation energy tells us about the reaction mechanism. B) The size of the activation energy tells us about the reaction rate. C) A slow reaction has low activation energy. D) A fast reaction has large activation energy.
17. Which of the following expressions summarizes the correct relationship between the free energy change, AG°, and the equilibrium constant, Keq? A) Keq >1 when AG° >0 B) Keq >1 when AG° < 0 C) Keq <1 when AG° < 0 D) Keq <1 when AG° = 0 18. Which of the Keq corresponds to the lowest value of AG°? A) Ke= 103 B) Keg = 10² C) Keq = 10-' D) AG° cannot be determined 19. Which of the Keq corresponds to the highest value of AG°? A) Keg = 101 B) Keq= 10² C) Keq= 103 D) Keq = 10s 20. Which of the Keq corresponds to the most negative value of AG°? A) Keg =1 B) Keq = 10' C) Keg = 10² D) Keq = 10³ 21. Which of the following statements is true? A) The product is favored in reaction in which AH° is a positive value. B) Entropy decreases when an acyclic compound forms a ring. C) In homolytic bond cleavage, entropy decreases and favors formation of products. D) The starting material is favored in a reaction in which AH° is a negative value. 22. Which of the following statements is true? A) The size of the activation energy tells us about the reaction mechanism. B) The size of the activation energy tells us about the reaction rate. C) A slow reaction has low activation energy. D) A fast reaction has large activation energy.
Introductory Chemistry: A Foundation
8th Edition
ISBN:9781285199030
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter17: Equilibrium
Section: Chapter Questions
Problem 20QAP
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please answer all 17-22
Transcribed Image Text:17. Which of the following expressions summarizes the correct relationship between the
free energy change, AG°, and the equilibrium constant, Keq?
A) Keq >1 when AG° >0
B) Keq >1 when AG° < 0
C) Keq <1 when AG° < 0
D) Keq <1 when AG° = 0
18. Which of the Keq corresponds to the lowest value of AG°?
A) Ke= 103 B) Keg = 10² C) Keq = 10-' D) AG° cannot be determined
19. Which of the Keq corresponds to the highest value of AG°?
A) Keg = 101 B) Keq= 10² C) Keq= 103 D) Keq = 10s
20. Which of the Keq corresponds to the most negative value of AG°?
A) Keg =1 B) Keq = 10' C) Keg = 10² D) Keq = 10³
21. Which of the following statements is true?
A) The product is favored in reaction in which AH° is a positive value.
B) Entropy decreases when an acyclic compound forms a ring.
C) In homolytic bond cleavage, entropy decreases and favors formation of products.
D) The starting material is favored in a reaction in which AH° is a negative value.
22. Which of the following statements is true?
A) The size of the activation energy tells us about the reaction mechanism.
B) The size of the activation energy tells us about the reaction rate.
C) A slow reaction has low activation energy.
D) A fast reaction has large activation energy.
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