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Homework Help: Help With Gas/Liquid Pressure/Volume

  1. Sep 7, 2009 #1
    1. Assume that a high dissolved oxygen level is 10 mg/L. If you have a liter (L) of water and removed all of the oxygen from it what volume would it occupy? (Use the ideal gas law and assume that P = 1 atm = 1 bar and that temperature is 25 C).

    2. PV = nRT

    3. Don't know how to use this equation with a gas and liquid.
  2. jcsd
  3. Sep 8, 2009 #2

    Andrew Mason

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    So how many milligrams of O2 would be removed (assume there are 10 mg/L dissolved in the water)? How many moles of O2 is that? How much volume will that amount of O2 occupy at 1 atm = 101325 Pa. and 25C (Hint: use PV=nRT. What is the temperature in K?)?

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