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: Given the following free energies of formation calculate K p at 298 K for: C2H2 (g) + 2 H2 (g) → C2H6 (g) C2H2(g)      ΔG°f = 209.2 kJ/mol C2H6(g)      ΔG°f = -32.9 kJ/mol a) 9.07 x 10 –1 b) 97.2 c) 1.24 x 10 31 d) 2.74 x 10 42 e) None of these is within a factor of 10 of the correct answer.  

Problem

Given the following free energies of formation calculate K p at 298 K for:

C2H(g) + 2 H(g) → C2H(g)

C2H2(g)      ΔG°f = 209.2 kJ/mol

C2H6(g)      ΔG°f = -32.9 kJ/mol

a) 9.07 x 10 –1

b) 97.2

c) 1.24 x 10 31

d) 2.74 x 10 42

e) None of these is within a factor of 10 of the correct answer.