45. If a chemical reaction has a positive change in entropy, AS, then: A) the reaction is exothermic. B) the disorder of the system increases. C) the Gibb's Free Energy would also be positive. D) The system becomes more ordered and less random. 46. Which of the following involves a decrease in entropy? A) the sublimation of solid CO2 into CO2 gas. B) the dissolving of NaCl in water. C) the evaporation of liquid ethanol. D) the freezing of liquid water into ice. 47. Which reaction is likely to have a negative change in entropy? A) 2 NH3 (g) → N2 (g) + 3 H2 (g) B) CaO (s) + CO2 (g) → CaCO3 (s) C) N204 (g) → 2 NO2 (g) D) 2C (s) + O2 (g) → 2 CO (g)
45. If a chemical reaction has a positive change in entropy, AS, then: A) the reaction is exothermic. B) the disorder of the system increases. C) the Gibb's Free Energy would also be positive. D) The system becomes more ordered and less random. 46. Which of the following involves a decrease in entropy? A) the sublimation of solid CO2 into CO2 gas. B) the dissolving of NaCl in water. C) the evaporation of liquid ethanol. D) the freezing of liquid water into ice. 47. Which reaction is likely to have a negative change in entropy? A) 2 NH3 (g) → N2 (g) + 3 H2 (g) B) CaO (s) + CO2 (g) → CaCO3 (s) C) N204 (g) → 2 NO2 (g) D) 2C (s) + O2 (g) → 2 CO (g)
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
Chapter18: Electrochemistry
Section: Chapter Questions
Problem 9RQ: What characterizes an electrolytic cell? What is an ampere? When the current applied to an...
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