E2C.8(b) Estimate AH®(750K) for the reaction N,(g) + H,(g) → NH,(g) fromthe listed value of the standard enthalpy of formation of NH,(g) at 298 K inconjunction with the data on the temperature-dependence of heat capacitiesgiven in Table 2B.1. Table 2B.1 Temperature variation of molar heat capacities,Com/(JK mol") = a + bT + c/T²*"p.mb/(10° K')c/(10° K*)aC(s, graphite)16.864.77-8.54CO,(g)44.228.79-8.62H,O(1)75.29N,(g)28.583.77-0.50* More values are given in the Resource section.

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E2C.8(b) Estimate AH®(750 K) for the reaction N,(g) + H,(g) → NH,(g) from the listed value of the standard enthalpy of formation of NH,(g) at 298 K in conjunction with the data on the temperature-dependence of heat capacities given in Table 2B.1.

E2C.8(b) Estimate AH®(750 K) for the reaction N,(g) + H,(g) → NH,(g) from the listed value of the standard enthalpy of formation of NH,(g) at 298 K in conjunction with the data on the temperature-dependence of heat capacities given in Table 2B.1.

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter2: The First Law Of Thermodynamics

Section: Chapter Questions

Problem 2.92E

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Question

100%

E2C.8(b) Estimate AH®(750K) for the reaction N,(g) + H,(g) → NH,(g) from
the listed value of the standard enthalpy of formation of NH,(g) at 298 K in
conjunction with the data on the temperature-dependence of heat capacities
given in Table 2B.1.

Table 2B.1 Temperature variation of molar heat capacities,
Com/(JK mol") = a + bT + c/T²*
"p.m
b/(10° K')
c/(10° K*)
a
C(s, graphite)
16.86
4.77
-8.54
CO,(g)
44.22
8.79
-8.62
H,O(1)
75.29
N,(g)
28.58
3.77
-0.50
* More values are given in the Resource section.

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