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Gas Laws and Stoichiometry

Gas Laws: Boyle's Law and Charles' Law

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Stoichiometry: Mass-Mass and Mole-Mole
Stoichiometry: Volume-Volume and Limiting Reagents
Gas Laws: Boyle's Law and Charles' Law
Gas Laws: Combined Gas Law and Ideal Gas Law

Boyle's Law
P1 x V1 = P2 x V2
 
P = pressure
V = volume
 
In Boyle's Law, the volume of the gas varies inversely with the pressure.
 
A sample of carbon dioxide occupies a volume of 3.5 liters at 125 kPA pressure. What pressure would the gas exert if the volume was decreased to 2 liters?
 
(3.5)(125) = (2)(P2)
437.5 = 2x
x=218.75
 
Charles' Law
V1/T1  = V2/T2
 
In Charles' Law, the volume of a fixed mass of the gas is directly proportional to its Kelvin temperature.
 
A sample of nitrogen occupies a volume of 250 mL at 25 degrees Celsius. What volume will it occupy at 95 degrees Celsius?
 
.25/298 = x/368 *
 
298x = 92
 
x= .308
 
* don't forget to convert to Kelvin!  Celsius + 273 = Kelvin