Molecular systems tend to move spontaneously to a state where the energy can be distributed in the most number of ways. The quantitative measure of this movement toward maximum dissipation of energy is called entropy and is denoted by the symbol S. As a state function, entropy change, AS, depends only on initial and final states. AS has a positive value when energy can distributed in more ways and a negative value when energy becomes concentrated. The following conditions usually result in an increase in entropy: • Part A Predict the sign of the entropy change, A,s", for each of the reaction displayed. • a change of phase: solidliquidgas an increase in the number of gas molecules, or Drag the appropriate items to their respective bins. > View Available Hint(s) Although the sign of entropy change can be predicted as described above, actual value of A,S" for a chemical process, must be calculated form the absolute entropy values, S", of the reactants and products. Reset Help A,s° = s" (products) – S" (reactants) A : Pb2+ (ag) + 2CI-(ag)→PbCl2B : Ca(OH)2(s)»CaO(s) + H20 C: 2NH3(g)N2(g) + 3H2(g)D: 2H2(9) + O2(g)→2H20() E: C;H12(9) + 802(9)5CO2(s)I;QG→2(9) Positive Negative
Molecular systems tend to move spontaneously to a state where the energy can be distributed in the most number of ways. The quantitative measure of this movement toward maximum dissipation of energy is called entropy and is denoted by the symbol S. As a state function, entropy change, AS, depends only on initial and final states. AS has a positive value when energy can distributed in more ways and a negative value when energy becomes concentrated. The following conditions usually result in an increase in entropy: • Part A Predict the sign of the entropy change, A,s", for each of the reaction displayed. • a change of phase: solidliquidgas an increase in the number of gas molecules, or Drag the appropriate items to their respective bins. > View Available Hint(s) Although the sign of entropy change can be predicted as described above, actual value of A,S" for a chemical process, must be calculated form the absolute entropy values, S", of the reactants and products. Reset Help A,s° = s" (products) – S" (reactants) A : Pb2+ (ag) + 2CI-(ag)→PbCl2B : Ca(OH)2(s)»CaO(s) + H20 C: 2NH3(g)N2(g) + 3H2(g)D: 2H2(9) + O2(g)→2H20() E: C;H12(9) + 802(9)5CO2(s)I;QG→2(9) Positive Negative
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter16: Thermodynamics: Directionality Of Chemical Reactions
Section16.3: Measuring Dispersal Of Energy: Entropy
Problem 16.3CE
Related questions
Question
Transcribed Image Text:Molecular systems tend to move spontaneously to a state where the energy can be distributed in
the most number of ways. The quantitative measure of this movement toward maximum
dissipation of energy is called entropy and is denoted by the symbol S. As a state function,
entropy change, AS, depends only on initial and final states. AS has a positive value when
energy can distributed in more ways and a negative value when energy becomes concentrated.
The following conditions usually result in an increase in entropy:
• Part A
Predict the sign of the entropy change, ArS", for each of the reaction displayed.
• a change of phase: solid-liquidgas
• an increase in the number of gas molecules, or
Drag the appropriate items to their respective bins.
> View Available Hint(s)
Although the sign of entropy change can be predicted as described above, actual value of A,S
for a chemical process, must be calculated form the absolute entropy values, S°, of the reactants
and products.
Reset Help
A,s° = s" (products) – s" (reactants)
A: Pb2+ (ag) + 2CI(ag)PhCl2B : Ca(OH)2(s)CaO(s) + H20
C: 2NH3(g) +N2(s) + 3H2(g)D: 2H2(g) + O2(9)+2H20()
E: CH12(9) + 802(g)+5C02(9) 120(9) →I2{9)
Positive
Negative
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 1 images
Knowledge Booster
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.Recommended textbooks for you
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
General Chemistry - Standalone book (MindTap Cour…
Chemistry
ISBN:
9781305580343
Author:
Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:
Cengage Learning
Chemistry for Engineering Students
Chemistry
ISBN:
9781337398909
Author:
Lawrence S. Brown, Tom Holme
Publisher:
Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
General Chemistry - Standalone book (MindTap Cour…
Chemistry
ISBN:
9781305580343
Author:
Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:
Cengage Learning
Chemistry for Engineering Students
Chemistry
ISBN:
9781337398909
Author:
Lawrence S. Brown, Tom Holme
Publisher:
Cengage Learning
Principles of Modern Chemistry
Chemistry
ISBN:
9781305079113
Author:
David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:
Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781133949640
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning