Kinetic Molecular Theory.

The following animation presents a view of the motion of an ideal gas molecule in a container.

Notable aspects of the ideal gas model:

• Molecules travel in straight lines, and obey Newton’s laws
• Collisions are perfectly elastic (no energy is lost in collisions)
• Molecules do not interact with each other
• Molecules have no volume

http://www.chm.davidson.edu/ChemistryApplets/KineticMolecularTheory/BasicConcepts.html

The Gas Laws:

Gas Law Diagram1.pdf

Required knowledge for quiz and test

Ideal Gas Law

PV = nRT  (note: T = Kelvin)

R = 0.08206 L • atm / mole • K

Know the following, or know how to derive them from the Ideal Gas Law:

· Boyle’s Law:       PV = k        P₁V₁ = P₂V₂

· Charles Law:       V = bT       V₁/T₁ = V₂/T₂

· Avogadros’s Law:V = na     V₁/n₁ = V₂/n₂

Kelvin Conversion from Celsius

T_k = T_c + 273

Pressure Unit Conversions

1 atm = 760 mm Hg              atm = atmosphere

1 atm = 760 tor                      tor = Torricelli

1 atm = 14.7 psi                      psi = pounds per square inch

1 atm = 101,325 Pa                 Pa = Pascal

STP = ?      T = 273K;  P = 1 atm