2.6 a) For the reaction: AH=-918 kJ and AS --112 JK-¹ Why is the entropy change negative? №2(g) + 3H2(g)=2 NH3(g) b) Show that the reaction is spontaneous at 25 °C. c) Even though the reaction is spontaneous, a catalyst is required before any ammonia will be formed. Explain why a catalyst is required.

2.6 a) For the reaction: AH=-918 kJ and AS --112 JK-¹ Why is the entropy change negative? №2(g) + 3H2(g)=2 NH3(g) b) Show that the reaction is spontaneous at 25 °C. c) Even though the reaction is spontaneous, a catalyst is required before any ammonia will be formed. Explain why a catalyst is required.

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter17: Chemcial Thermodynamics

Section: Chapter Questions

Problem 17.78QE

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