Free Energy and Entropy
Flashcard
•
Chemistry
•
KG
•
Practice Problem
•
Hard
Robyn Demilio
FREE Resource
Student preview
7 questions
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1.
FLASHCARD QUESTION
Front
What is free energy?
Back
The overall energy change for a process, called 'free energy' because it is free to do things, such as work.
2.
FLASHCARD QUESTION
Front
What is a thermodynamically favorable process?
Back
A process that produces free energy; also called a spontaneous process.
3.
FLASHCARD QUESTION
Front
What is a thermodynamically unfavorable process?
Back
A process that does not produce free energy; also called a non-spontaneous process.
4.
FLASHCARD QUESTION
Front
What is entropy?
Back
Entropy (S) is a measure of the disorder of a system, describing the behavior of matter and energy within a physical system.
5.
FLASHCARD QUESTION
Front
What does the second law of thermodynamics state?
Back
The entropy of an isolated system never decreases. An isolated system always spontaneously evolves toward the state with the maximum entropy.
6.
FLASHCARD QUESTION
Front
How do chemists calculate the change in free energy (deltaG)?
Back
Free energy = Change in enthalpy - temperature x change in entropy.
7.
FLASHCARD QUESTION
Front
What is crossover temperature?
Back
The unique temperature at which free energy is zero for every process that has one favorable and one unfavorable factor, those factors being entropy and enthalpy.
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