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Free Energy and Entropy

Free Energy and Entropy

Assessment

Flashcard

Chemistry

KG

Practice Problem

Hard

Created by

Robyn Demilio

FREE Resource

Student preview

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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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