39. When the temperature A. direct is decreased, how would you describe a chemical reaction that produces heat? B. endothermic C. exothermic D. inverse 40. What does Le Chatelier's principle state about chemical equilibrium? A. If a stress is applied to a system in equilibrium, then the systems adjust in order to increase the cause of the stress applied. B. If a stress is applied to a system in equilibrium, then the systems adjust in order to increase the effect of the stress applied. C. If a stress is applied to a system in equilibrium, then the systems adjust in order to reduce the cause of the stress applied. D. If a stress is applied to a system in equilibrium, then the systems adjust in order to reduce the effect of the stress applied. 41. If the computed Kc of an unknown compound is equal to 1.3, where does chemical equilibrium lie? A. center B. left C. right D. left to right 42. When the computed Kc of an unknown compound is equal to 0.45, which of the following will predominate in the equilibrium mixture? A. direction B. factor C. products D. reactants 43. Which of the following is CORRECT on the following statement? i. In Bronsted-Lowry acids are defined as proton acceptors. ii. In Bronsted-Lowry acids are defined as proton donors Brønsted-Lowry base is a proton (hydrogen ion) acceptor. iii.
39. When the temperature A. direct is decreased, how would you describe a chemical reaction that produces heat? B. endothermic C. exothermic D. inverse 40. What does Le Chatelier's principle state about chemical equilibrium? A. If a stress is applied to a system in equilibrium, then the systems adjust in order to increase the cause of the stress applied. B. If a stress is applied to a system in equilibrium, then the systems adjust in order to increase the effect of the stress applied. C. If a stress is applied to a system in equilibrium, then the systems adjust in order to reduce the cause of the stress applied. D. If a stress is applied to a system in equilibrium, then the systems adjust in order to reduce the effect of the stress applied. 41. If the computed Kc of an unknown compound is equal to 1.3, where does chemical equilibrium lie? A. center B. left C. right D. left to right 42. When the computed Kc of an unknown compound is equal to 0.45, which of the following will predominate in the equilibrium mixture? A. direction B. factor C. products D. reactants 43. Which of the following is CORRECT on the following statement? i. In Bronsted-Lowry acids are defined as proton acceptors. ii. In Bronsted-Lowry acids are defined as proton donors Brønsted-Lowry base is a proton (hydrogen ion) acceptor. iii.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:39. When the temperature is decreased, how would you describe a chemical reaction that produces heat?
B. endothermic
C. exothermic
D. inverse
A. direct
40. What does Le Chatelier's principle state about chemical equilibrium?
A. If a stress is applied to a system in equilibrium, then the systems adjust in order to increase the cause
of the stress applied.
B.
If a stress is applied to a system in equilibrium, then the systems adjust in order to increase the effect
of the stress applied.
C.
If a stress is applied to a system in equilibrium, then the systems adjust in order to reduce the cause of
the stress applied.
D.
If a stress is applied to a system in equilibrium, then the systems adjust in order to reduce the effect of
the stress applied.
41. If the computed Kc of an unknown compound is equal to 1.3, where does chemical equilibrium lie?
A. center
B. left
C. right
D. left to right
42. When the computed Kc of an unknown compound is equal to 0.45, which of the following will predominate in
the equilibrium mixture?
A. direction
B. factor
C. products
D. reactants
43. Which of the following is CORRECT on the following statement?
i. In Bronsted-Lowry acids are defined as proton acceptors.
ii. In Bronsted-Lowry acids are defined as proton donors
Brønsted-Lowry base is a proton (hydrogen ion) acceptor.
B. ii only
C. iii only
iii.
A. i only
D. ii and iii
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