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12.2
 

12.2

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    12.2 12.2 Presentation Transcript

    • Gas Laws 12.2
    • 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.)
    • 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
    • Charles's 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
    • 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
    • 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.