The Gas Laws

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The Gas Laws
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Gas Law Calculations
Boyles Law PV k
Charles Law V T
k
P and V change n, R, T are constant
Ideal Gas Law PV nRT
T and V change P, n, R are constant
P, V, and T change n and R are constant
Combined Gas Law PV T
k
3
Gas Law Calculations
Ideal Gas Law PV nRT
Daltons Law Partial Pressures PT PA PB
1 atm 760 mm Hg 101.3 kPa
R 0.0821 L atm / mol K
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History of ScienceGas Laws
Gay-Lussacs law
Dalton announces his atomic theory
Avagadros particle Number theory
Boyles law
Charless law
1650
1700
1750
1800
1850
Constitution of the United States signed
Mogul empire in India (1526-1707)
U.S. Congress bans importation of slaves
United States Bill of Rights ratified
Napoleon is emperor(1804- 12)
Latin American countries gain independence
(1791- 1824)
Haiti declares independence
Herron, Frank, Sarquis, Sarquis, Schrader, Kulka,
Chemistry, Heath Publishing,1996, page 220
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Scientists

• Evangelista Torricelli (1608-1647)
• Published first scientific explanation of a
  vacuum.
• Invented mercury barometer.
• Robert Boyle (1627- 1691)
• Volume inversely related to pressure
  (temperature remains constant)
• Jacques Charles (1746 -1823)
• Volume directly related to temperature
  (pressure remains constant)
• Joseph Gay-Lussac (1778-1850)
• Pressure directly related to temperature
  (volume remains constant)

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Gas Demonstrations
Eggsplosion
Gas  Demonstrations
Effect of Temperature on Volume of a Gas VIDEO
Effect of Temperature on Volume of a Gas VIDEO
Air Pressure Crushes a Popcan VIDEO
Air Pressure Crushes a Popcan VIDEO
Gas  Demonstrations
Air Pressure Inside a Balloon (Needle through a
balloon) VIDEO
Air Pressure Inside a Balloon (Needle through a
balloon) VIDEO
Effect of Pressure on Volume (Shaving Creme in
a Belljar) VIDEO
Effect of Pressure on Volume (Shaving Creme in a
Belljar) VIDEO
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