Lecture Notes January 13, 1999 Gas Laws
What are the fundamental properties of a gas?
What do we need to measure to describe a gas sample?
Pressure
Converting Pressure Units
Compressibility of Gases Boyle’s Law -- Pressure-Volume Relationship
#14. A sample of nitrogen gas has a pressure of 67.5mm Hg in a 500. mL flask. What is the pressure of this gas sample when it is transferred to a 125 mL flask at the same temperature?
Temperature and Gas Volume Charles’ Law
#20. You have a sample of gas in a flask with a volume of 250.0 mL. At 25.5 ?C the pressure of the gas is 360 mm Hg. If you decrease the temperature to -5.0 ?C, what is the gas pressure at the lower temperature?
Avogadro’s Hypothesis
#19. Ethane, C2H6, burns in air according to the equation below. How many liters of O2 are required for complete reaction with 5.2 L of C2H6? How many liters of vapor are produced? Assume all gases are measured at the same termperature and pressure. 2 C2H6(G) + 7 O2(g) ? 4 CO2(g) + 6 H2O(g)
The Ideal Gas Law
#42. Asume that a bicycle tire with an internal volume of 1.52 L contains 0.406 mol of air. The tire will burst if its internal pressure reaches 7.25 atm. To what temperature, in ?C, does the aire in the tire need to be heated to cause a blowout.
Computing Molar Mass of a Gas
Gas Laws and Chemical Reactions
Gas Mixtures
The Kinetic-Molecular Theory of Gases
Imporant Relationships
Email: craig@hws.edu
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