AP Chapter 16 - Spontaneous Chapter 16 Spontaneity, entropy...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Page 1 Chapter 16 Spontaneity, entropy and free energy Spontaneous c A reaction that will occur without outside intervention. c We can’t determine how fast. c We need both thermodynamics and kinetics to describe a reaction completely. c Thermodynamics compares initial and final states. c Kinetics describes pathway between. Thermodynamics c 1st Law- the energy of the universe is constant. c Keeps track of thermodynamics doesn’t correctly predict spontaneity. c Entropy (S) Number of ways things can be arranged Looks like disorder or randomness c 2nd Law the entropy of the universe increases in any change Entropy c Defined in terms of probability. c Substances take the arrangement that is most likely. c The most likely is the most random. c Calculate the number of arrangements for a system. c 2 possible arrangements c 50 % chance of finding the left empty c 4 possible arrangements c 25% chance of finding the left empty c 50 % chance of them being evenly dispersed
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Page 2 c 4 atoms c 8% chance of finding the left empty c 50 % chance of them being evenly dispersed Gases c Gases completely fill their chamber because there are many more ways to do that than to leave half empty. c
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/28/2009 for the course CHEM 102 taught by Professor Freeman during the Spring '08 term at South Carolina.

Page1 / 5

AP Chapter 16 - Spontaneous Chapter 16 Spontaneity, entropy...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online