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For the reaction H2(g) + S(S) --> H2S(g), AH° = -20.2 kJ/mol and AS° = +43.1 J/K-mol. Which of these statements is true?

For the reaction H2(g) + S(S) --> H2S(g), AH° = -20.2 kJ/mol and AS° = +43.1 J/K-mol. Which of these statements is true?

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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For the reaction H2(g) + S(S) --> H2S(g), AH° = -20.2 kJ/mol and AS° = +43.1 J/K-mol. Which of these statements is true? Select one: a. The reaction is spontaneous only at high temperatures. b. AG° becomes less favorable as temperature increases. c. The reaction is spontaneous at all temperatures. O d. The reaction is at equilibrium at 25°C under standard conditions. e. The reaction is only spontaneous at low temperatures.
Transcribed Image Text:For the reaction H2(g) + S(S) --> H2S(g), AH° = -20.2 kJ/mol and AS° = +43.1 J/K-mol. Which of these statements is true? Select one: a. The reaction is spontaneous only at high temperatures. b. AG° becomes less favorable as temperature increases. c. The reaction is spontaneous at all temperatures. O d. The reaction is at equilibrium at 25°C under standard conditions. e. The reaction is only spontaneous at low temperatures.
Ozone (O3) in the atmosphere can react with nitric oxide (NO): 03(g) + NO(g) --> NO2(g) + O2(g). Calculate the AG° for this reaction at 25°C. (AH° = -199 kJ/mol, AS° = -4.1 J/K-mol) (3 sig figs , kJ/mol)
Transcribed Image Text:Ozone (O3) in the atmosphere can react with nitric oxide (NO): 03(g) + NO(g) --> NO2(g) + O2(g). Calculate the AG° for this reaction at 25°C. (AH° = -199 kJ/mol, AS° = -4.1 J/K-mol) (3 sig figs , kJ/mol)
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