5. For the following reaction and data: 1 5N2 (9) + 02 (9)= NO2 9) A„H° = 33.2 kJ mol¯1 A,S° = -60.9 J mol-'K-1 s° (N2 (g)) = 191.6 J mol-1K-1 s°(NO2(g)) = 240.1 J mol-'K-1 %3D

Introduction to Chemical Engineering Thermodynamics
8th Edition
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Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
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5. For the following reaction and data:
1
N2 (g)
+ 02 (g) = NO2 (g)
A„H° = 33.2 kJ mol-1 A„S° = -60.9 J mol-1K-1
)
s° (N2 (g)) = 191.6 J mol-'K-1 S°(NO,(g)) = 240.1 J mol-'K-1
a) What is S° for O2 (g) ?
b) At standard state conditions, which of the following statements is true about the reaction as written?
- Spontaneous at all temperatures
- Spontaneous at low temperatures, non-spontaneous at high temperatures
- Spontaneous at high temperatures, non-spontaneous at low temperatures
- Non-spontaneous at all temperatures
c) Calculate A-G° for this reaction at 25.0°C. Express your answer in kJ mol.
Transcribed Image Text:5. For the following reaction and data: 1 N2 (g) + 02 (g) = NO2 (g) A„H° = 33.2 kJ mol-1 A„S° = -60.9 J mol-1K-1 ) s° (N2 (g)) = 191.6 J mol-'K-1 S°(NO,(g)) = 240.1 J mol-'K-1 a) What is S° for O2 (g) ? b) At standard state conditions, which of the following statements is true about the reaction as written? - Spontaneous at all temperatures - Spontaneous at low temperatures, non-spontaneous at high temperatures - Spontaneous at high temperatures, non-spontaneous at low temperatures - Non-spontaneous at all temperatures c) Calculate A-G° for this reaction at 25.0°C. Express your answer in kJ mol.
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