GAS LAWS

1
GAS LAWS

• Kinetic Molecular Model
• small particles
• large distances between particles
• in constant, rapid, random, motion
• collisions are perfectly elastic
• Kinetic energy depends only on temp.
• Particles exert no force on each other.

• Characteristics of gases
• have mass
• easily compressed
• fill container
• diffuse through each other easily
• exert pressure
• pressure depends on temperatures

2
Pressure

• Atomospheric pressure
• atm
• psi
• pascals
• kilopascals
• altitude effects
• barometer
• manometer

• STP
• 0 celsius
• 1 atm 760 mm Hg, 101,325 Pa
• Boyles Law
• P1V1P2V2
• inversely proportional

3
Gas Laws

• Charles Law
• Effect of temperature on pressure
• V1T2V2T1
• Direct proportion

• Avogadros Law
• V22.4liter/mole X n
• at STP
• Daltons Law of Partial Pressures
• PtPa Pb Pc
• Ideal Gas Law
• PVnRT
• R.0821 atm L/mol K

4
Solids and Liquids

• Solids
• Crystalline
• Amorphous
• metallic solids
• molecular solids
• ionic solids
• covalent-network solids

• Liquids
• viscosity
• polarity
• surface tension