Multiple Choice
According to the second law of thermodynamics, what is the natural tendency for the entropy of an isolated system to do over time?
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19. Chemical Thermodynamics
Entropy
Multiple Choice
Which of the following terms best describes entropy in a thermodynamic system?
A
A measure of the number of accessible microscopic arrangements (microstates) consistent with the macroscopic state
B
The total amount of heat contained in a system
C
A measure of the average kinetic energy of particles in a system
D
The energy required to raise the temperature of 1 g of a substance by 1 °C
Verified step by step guidance1
Step 1: Understand that entropy is a thermodynamic property related to the disorder or randomness of a system at the microscopic level.
Step 2: Recall that entropy quantifies the number of possible microscopic configurations (microstates) that correspond to the macroscopic state of the system.
Step 3: Recognize that entropy is not the total heat content of a system; that concept relates more to internal energy or enthalpy.
Step 4: Note that the average kinetic energy of particles is related to temperature, not entropy.
Step 5: Understand that the energy required to raise the temperature of 1 g of a substance by 1 °C is the definition of specific heat capacity, which is different from entropy.
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