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a. From a consideration of the following reactions, calculate AH; for methane, CH4 (g). (1) C(g) + O2 (9) → CO2 (9); AH° =-1110.17 kJ (2) 2H2 (9) + O2(g) → 2H2O(1); AH® =-571.6 kJ %3D (3) H20(1) → H2O(g); AH° = 44.0 kJ (4) CH4 (9) + 202 (9) → CO2(9) + 2H2O(g); AH° =-803.0 kJ (5) C(g) → C(s); AH° =-716.7 kJ AH - kJ b. From appropriate entropy data, calculate AS" for the formation of methane from the elements. C(s) + 2H2 (9) → CH4 (9) S° (C(s)) = 5.74 J/(mol-K) S° (H2 (9)) = 130.6 J/(mol-K) S° (CH4 (9)) = 186.3 J/(mol-K) AS" : J/K c. Calculate AG; for methane at 25°C. AG; = kJ/mol

a. From a consideration of the following reactions, calculate AH; for methane, CH4 (g). (1) C(g) + O2 (9) → CO2 (9); AH° =-1110.17 kJ (2) 2H2 (9) + O2(g) → 2H2O(1); AH® =-571.6 kJ %3D (3) H20(1) → H2O(g); AH° = 44.0 kJ (4) CH4 (9) + 202 (9) → CO2(9) + 2H2O(g); AH° =-803.0 kJ (5) C(g) → C(s); AH° =-716.7 kJ AH - kJ b. From appropriate entropy data, calculate AS" for the formation of methane from the elements. C(s) + 2H2 (9) → CH4 (9) S° (C(s)) = 5.74 J/(mol-K) S° (H2 (9)) = 130.6 J/(mol-K) S° (CH4 (9)) = 186.3 J/(mol-K) AS" : J/K c. Calculate AG; for methane at 25°C. AG; = kJ/mol

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter16: Thermodynamics: Directionality Of Chemical Reactions
Section: Chapter Questions
Problem 83QRT: Another step in the metabolism of glucose, which occurs after the formation of glucose6-phosphate,...
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a. From a consideration of the following reactions, calculate AH; for methane, CH4 (g). (1) C(g) + O2 (9) → CO2 (9); AH° =-1110.17 kJ (2) 2H2 (9) + O2(g) → 2H2O(1); AH® =-571.6 kJ %3D (3) H20(1) → H2O(g); AH° = 44.0 kJ (4) CH4 (9) + 202 (9) → CO2(9) + 2H2O(g); AH° =-803.0 kJ (5) C(g) → C(s); AH° =-716.7 kJ AH - kJ b. From appropriate entropy data, calculate AS" for the formation of methane from the elements. C(s) + 2H2 (9) → CH4 (9) S° (C(s)) = 5.74 J/(mol-K) S° (H2 (9)) = 130.6 J/(mol-K) S° (CH4 (9)) = 186.3 J/(mol-K) AS" : J/K c. Calculate AG; for methane at 25°C. AG; = kJ/mol
Transcribed Image Text:a. From a consideration of the following reactions, calculate AH; for methane, CH4 (g). (1) C(g) + O2 (9) → CO2 (9); AH° =-1110.17 kJ (2) 2H2 (9) + O2(g) → 2H2O(1); AH® =-571.6 kJ %3D (3) H20(1) → H2O(g); AH° = 44.0 kJ (4) CH4 (9) + 202 (9) → CO2(9) + 2H2O(g); AH° =-803.0 kJ (5) C(g) → C(s); AH° =-716.7 kJ AH - kJ b. From appropriate entropy data, calculate AS" for the formation of methane from the elements. C(s) + 2H2 (9) → CH4 (9) S° (C(s)) = 5.74 J/(mol-K) S° (H2 (9)) = 130.6 J/(mol-K) S° (CH4 (9)) = 186.3 J/(mol-K) AS" : J/K c. Calculate AG; for methane at 25°C. AG; = kJ/mol
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