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12.2

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Transcript

  • 1. Gas Laws 12.2
  • 2. Variables you need to know
    • P = pressure exerted by the gas
    • V = volume of the gas
    • T = temperature in Kelvin
    • n = number of moles of gas
        • (Oh yes, you will need mole island.)
  • 3. Boyle’s Law
    • Deals with pressure and volume .
    • As pressure increases, volume decreases. The opposite is also true.
    • P 1 V 1 =P 2 V 2
      • See page 425 for example
  • 4. Charles' Law
    • Deals with temperature and volume .
    • An increase in temperature will cause an increase in volume. The opposite is also true.
    • V 1 /T 1 = V 2 /T 2
      • See page 428 for example
  • 5. Gay-Lussac’s Law
    • Deals with pressure and temperature .
    • Increased temperature = increased pressure. The opposite is also true.
    • P 1 /T 1 = P 2 /T 2
      • See page 430 for example
  • 6. Avogadro's Law
    • Gas volume is directly proportional to the number of moles of gas at the same temperature and pressure.
      • The problem is volume changes with temperature and pressure.
      • STP 0 0 C and 1 atmosphere
    • V 1 /n 1 =V 2 /n 2
    • You will have to use mole island to convert volume (Liters) & moles.
  • 7. Homework
    • P.425 1-3
    • P.428 1-3
    • P.431 1-3
    • There is an example of how to do each problem in the book.
    • Show all work.
    • Round to the 100 th .

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