sys Example: If AS°, =-198.3 J/K, is the reaction spontaneous at 25°C N2 + 3H2 → 2NH3 • AS univ = AS sys + AS surr > ? AS surr (AHsys)/T Determine the AHrxn • AH° N2(g) = 0 kJ/mol • AH°, H2(g) = 0 kJ/mol • AH°; NH3(g) = -46.19 kJ/mol

sys Example: If AS°, =-198.3 J/K, is the reaction spontaneous at 25°C N2 + 3H2 → 2NH3 • AS univ = AS sys + AS surr > ? AS surr (AHsys)/T Determine the AHrxn • AH° N2(g) = 0 kJ/mol • AH°, H2(g) = 0 kJ/mol • AH°; NH3(g) = -46.19 kJ/mol

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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Question

sys
Example: If AS°, =-198.3 J/K, is the reaction spontaneous
at 25°C
N2 + 3H2 → 2NH3
• AS univ = AS sys + AS surr > ?
AS surr (AHsys)/T
Determine the AHrxn
• AH° N2(g) = 0 kJ/mol
• AH°, H2(g) = 0 kJ/mol
• AH°; NH3(g) = -46.19 kJ/mol

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