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Dalton’s Law of Partial pressure

  • The total pressure of a mixture of gas is the sum of all of the partial pressures of the gases.

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  • Equation: Pa + Pb + Pc… = PTotal

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Dalton’s Law of Partial Pressure Practice

  • A container holds three gases: oxygen, carbon dioxide, and helium. The partial pressures of the three gases are 2.00 atm, 3.00 atm, and 4.00 atm, respectively. What is the total pressure inside the container?

 

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Combined Gas Law

  • Compares volume, temperature, AND pressure
  • Combined Gas Law equation:

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P1

V1

T1

P2

V2

T2

1.0 atm

3.0 L

17.ºC

2.5 atm

 

27.ºC

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Combined Gas Law

If I initially have a gas at a pressure of 6.0 atm, a volume of 20 liters, and a temperature of 200 K, and then I raise the pressure to 12.0 atm and increase the temperature to 600 K, what is the new volume of the gas?

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