The molar heat capacity of N2(g) in the range 200 K to 400 K is given by Cp,m/(J K−1 mol−1) = 28.58 + 3.77 × 10–3(T/K). Given that the standard molar entropy of N2(g) at 298 K is 191.6 J K−1 mol−1, calculate the value at 373 K. Repeat the calculation but this time assuming that Cp,m is independent of temperature and takes the value 29.13 J K−1 mol−1. Comment on the difference between the results of the two calculations.

The molar heat capacity of N2(g) in the range 200 K to 400 K is given by Cp,m/(J K−1 mol−1) = 28.58 + 3.77 × 10–3(T/K). Given that the standard molar entropy of N2(g) at 298 K is 191.6 J K−1 mol−1, calculate the value at 373 K. Repeat the calculation but this time assuming that Cp,m is independent of temperature and takes the value 29.13 J K−1 mol−1. Comment on the difference between the results of the two calculations.

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter16: Spontaneity Of Reaction

Section: Chapter Questions

Problem 78QAP

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