GayLussacs Law

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Gay-Lussacs Law

• Pressure vs. Temperature

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Why Do We Care?

• It explains why we have to watch our tire pressure

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Lussacs Fabulous Formula!

• P1 / T1 P2 / T2
• Its a DIRECT relationship. As one value goes
  up, the other one does too (and vice versa).
• http//www.grc.nasa.gov/WWW/K-12/airplane/Animati
  on/frglab2.html

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Lussac Blew Off Volume

• Lussacs Law just compares the effects of
  Pressure (P) and TEMPERATURE (T)
• We assume the Volume (V) does not change.

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Lets Solve a Problem!

• A gas has a pressure of 1atm at 300 K (All
  temperatures HAVE to be converted to Kelvins ).
• At what pressure will the gas have a
  temperature of 350 K?

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1. Identify your variables

• A gas has a pressure of 1 atm (P1) at 300 K
  (T1). At what pressure (P2) will the gas have
  a temperature of 350 K (T2)?

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2. Plug values into equation

• P1/ T1 P2 / T2
• 1 atm / 300K P2 / 350 K
• After cross-multiplying to solve for P2, we get
  1.17 atm

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Time for The Happy Dance!
(and to work some problems)