GOB Chemistry

Learn the toughest concepts covered in your GOB - General, Organic, and Biological Chemistry class with step-by-step video tutorials and practice problems.

Energy, Rate and Equilibrium

Entropy (Simplified)

Next Topic

Entropy is the disorder or chaos associated with a system’s inability to convert thermal energy into mechanical work.

Entropy and 2nd Law

1

concept

Entropy (Simplified) Concept 1

clock
54s
Play a video:
Was this helpful ?
0

The Second Law of Thermodynamics states that there is a natural tendency of systems (chemical reactions) to move towards a state of disorder.

2

example

Entropy (Simplified) Example 1

clock
43s
Play a video:
Was this helpful ?
0
3

concept

Entropy (Simplified) Concept 2

The video is coming soon
Was this helpful ?
0

Increase in temperature, moles of gas and bond breaking causes an increase in Entropy (+∆S).

4

example

Entropy (Simplified) Example 2

clock
1m
Play a video:
Was this helpful ?
0
5
Problem

Predict how the entropy of the substance is affected in the following processes:

CH4 (g, 125°C)   →   CH4 (g, 200°C)

6
Problem

Which reaction is most likely to have a positive ∆S of system?

7
Problem

Which of the following processes shows a decrease in entropy of the system?