Activity 5: Spontaneity and Gibbs' Free Energy Directions: Calculate AG°, AHº, AS° then predict whether the reaction is spontaneous. Consider the following reaction: N2(g) + 3H2(g) –→ 2NH3(g) 1. AH = - 92.4 kJ/mol (a) The absolute entropy values, S, at 238 K for N2(g), H2(g) and NH3(g) are 192 J/Kmol, 131 J/Kmol and 193 J/Kmol respectively. Calculate AS° for the reaction and explain the sign of ASº. (b) Calculate AG° for the reaction at 238 K. State and explain whether the reaction is spontaneous.

Activity 5: Spontaneity and Gibbs' Free Energy Directions: Calculate AG°, AHº, AS° then predict whether the reaction is spontaneous. Consider the following reaction: N2(g) + 3H2(g) –→ 2NH3(g) 1. AH = - 92.4 kJ/mol (a) The absolute entropy values, S, at 238 K for N2(g), H2(g) and NH3(g) are 192 J/Kmol, 131 J/Kmol and 193 J/Kmol respectively. Calculate AS° for the reaction and explain the sign of ASº. (b) Calculate AG° for the reaction at 238 K. State and explain whether the reaction is spontaneous.

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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