The standard molar entropies, ΔSm (in J/K-mole), and the standard molar enthalpies, ΔHm (in KJ/mole) for theoretical substances A2, B2 and AB respectively at 298 Kelvins are given below. Also in the figure are their temperature-dependent individual heat capacities. Using the given data, answer the following questions: a. What is the change in the enthalpy, ΔH (in KJ) for the same reaction at 1,000 Kelvins? b. What is the change in the entropy, ΔS (in J/K) for the same reaction at 1,000 Kelvins? c. What is the change in the Gibbs Free Energy, ΔG (in KiloJoules) for the same reaction at 1,000 Kelvins?

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
icon
Related questions
icon
Concept explainers
Question

The standard molar entropies, ΔSm (in J/K-mole), and the standard molar enthalpies, ΔHm (in KJ/mole) for theoretical substances A2, B2 and AB respectively at 298 Kelvins are given below. Also in the figure are their temperature-dependent individual heat capacities. Using the given data, answer the following questions:

a. What is the change in the enthalpy, ΔH (in KJ) for the same reaction at 1,000 Kelvins?

b. What is the change in the entropy, ΔS (in J/K) for the same reaction at 1,000 Kelvins?

c. What is the change in the Gibbs Free Energy, ΔG (in KiloJoules) for the same reaction at 1,000 Kelvins?

ΔΗ
Substance
m.
(KiloJoule/mole)
(Joule/Kelvin-mole)
130.684
A2
B2
223.066
-92.31
AB
186.908
2AB(g)
A2(9) + B21g) 2AB(9)
29.066
0.836 x10-3T + 20.17 x10-7T²
Cp A2(9)
Cp B2(9)
Cp AB(g)
31.696 + 10.144 x10-3T - 40.38 x10-7T²
= 28.166 + 1.810x10-3T + 15.47 x10-7T²
Transcribed Image Text:ΔΗ Substance m. (KiloJoule/mole) (Joule/Kelvin-mole) 130.684 A2 B2 223.066 -92.31 AB 186.908 2AB(g) A2(9) + B21g) 2AB(9) 29.066 0.836 x10-3T + 20.17 x10-7T² Cp A2(9) Cp B2(9) Cp AB(g) 31.696 + 10.144 x10-3T - 40.38 x10-7T² = 28.166 + 1.810x10-3T + 15.47 x10-7T²
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Knowledge Booster
Thermochemistry
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY