Ch. 17 - Chemical ThermodynamicsSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Consider the reaction of N2O5 at 25°C for which the followin...

Problem

Consider the reaction of N2O5 at 25°C for which the following data are relevant:

2 N2O(g) → 4 NO(g) + O(g)

Substance             ΔH°f                               S°

             N 2O5                    11.29 kJ/mol             355.3 J/K mol

              NO 2                     33.15 kJ/mol             239.9 J/K mol

              O 2                                   ?                     204.8 J/K mol

 

What is ΔS° for the reaction (in J/K)?

a) 89.5

b) 249.2

c) 453.8

d) 249.2

e) -115.6