Two objects A and B are initially at temperatures TA-350 K a two objects. If over a short interval of time Q=1 kJ is transfe a) What is the change of entropy of the hot object? ASnot 3/K Select-- v Therefore, the entropy of the hot object b) What is the change of entropy of the cold object?

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
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Two objects A and B are initially at temperatures TA=350 K and Tg=175 K. As the two objects are brought into contact, energy in form of heat starts being transferred between the
two objects, If over a short interval of time Q=1 kJ is transferred between the two objects without significantly changing their temperature,
a) What is the change of entropy of the hot object?
ASnot =
J/K
Therefore, the entropy of the hot object
Select-v
b) What is the change of entropy of the cold object?
AScold =
J/K
Therefore, the entropy of the cold object
Select---
c) What is the change of entropy of the combined system?
AS =
J/K
Therefore, the entropy of the combined system
-Select-- v
d) Assume now that the two objects are embedded in a thermal bath at constant temperature, To=TA=TB=200 K. If the system undergoes a change of entropy equal to 34 3/K,
what condition must the change of its internal energy satisfy in order for the process to be spontaneous?
AUnt <
Transcribed Image Text:MY NOTES Two objects A and B are initially at temperatures TA=350 K and Tg=175 K. As the two objects are brought into contact, energy in form of heat starts being transferred between the two objects, If over a short interval of time Q=1 kJ is transferred between the two objects without significantly changing their temperature, a) What is the change of entropy of the hot object? ASnot = J/K Therefore, the entropy of the hot object Select-v b) What is the change of entropy of the cold object? AScold = J/K Therefore, the entropy of the cold object Select--- c) What is the change of entropy of the combined system? AS = J/K Therefore, the entropy of the combined system -Select-- v d) Assume now that the two objects are embedded in a thermal bath at constant temperature, To=TA=TB=200 K. If the system undergoes a change of entropy equal to 34 3/K, what condition must the change of its internal energy satisfy in order for the process to be spontaneous? AUnt <
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