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2) Consider the following reaction: N2(g) + 3H2(g) + 2NH3(g) AH = -92.4 kJmol-¹ a) The absolute entropy values, S, at 238 K for N2(g) + 3H2(g) and 2NH3(g) are 192, 131 and 193 J K mot respectively. Calculate AS for the reaction. b) Calculate AG for the reaction at 238 K. State and explain whether the reaction is spontaneous. Moto: Ikil moll

2) Consider the following reaction: N2(g) + 3H2(g) + 2NH3(g) AH = -92.4 kJmol-¹ a) The absolute entropy values, S, at 238 K for N2(g) + 3H2(g) and 2NH3(g) are 192, 131 and 193 J K mot respectively. Calculate AS for the reaction. b) Calculate AG for the reaction at 238 K. State and explain whether the reaction is spontaneous. Moto: Ikil moll

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
Section16.3: Measuring Dispersal Of Energy: Entropy
Problem 16.3CE
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2) Consider the following reaction: N2(g) + 3H2(g) 2NH3(g) AH = -92.4 kJmol-¹ a) The absolute entropy values, S. at 238 K for N2(g) + 3H2(g) and 2NH3(g) are 192, 131 and 193 J K-¹ mol-¹ respectively. Calculate AS for the reaction. b) Calculate AG" for the reaction at 238 K. State and explain whether the reaction is spontaneous. Note: J K-¹ mot¹ = Joules per Kelvin per mole
Transcribed Image Text:2) Consider the following reaction: N2(g) + 3H2(g) 2NH3(g) AH = -92.4 kJmol-¹ a) The absolute entropy values, S. at 238 K for N2(g) + 3H2(g) and 2NH3(g) are 192, 131 and 193 J K-¹ mol-¹ respectively. Calculate AS for the reaction. b) Calculate AG" for the reaction at 238 K. State and explain whether the reaction is spontaneous. Note: J K-¹ mot¹ = Joules per Kelvin per mole
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