Summary CH 232 Thermochemistry Review

1/10/11




Oregon State University Chemistry 232


General Chemistry

Course PowerPoint Notes

Chapter 6

Thermochemistry



Instructor: Dr. Daniel J.T. Myles
Office: Gilbert Hall 145
E-mail:
Blackboard: http://my.oregonstate.edu/




Outline


• Examine various forms of energy

• Transfer of energy and the First Law of Thermodynamics

• Enthalpy

• Enthalpies of Reactions

• Calorimetry

• Hessʼs Law

• Enthalpies of Formation

2




1

, 1/10/11




Energy



• Energy is the ability to do work or transfer heat.

• Energy used to cause an object that has mass to move is called work.

• Energy used to cause the temperature of an object to rise is called
heat.




3




Potential Energy



Potential energy (stored energy) is energy an object possesses by virtue
of its position or chemical composition.




4




2

, 1/10/11




Kinetic Energy



Kinetic energy is energy an object possesses by virtue of its motion.


1
KE= mv 2
2



5




Conversion of Energy




• Energy can be converted from one type to another.

• For example, the cyclist above has potential energy as she sits on top
of the hill.



6




3