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Homework Help: Graham's Law Question (With Gases)

  1. Nov 15, 2007 #1
    1. The problem statement, all variables and given/known data

    This is for an experiment. I determined the theoretical diffusion ratio of ammonia to hydrogen chloride to be 1.46:1 but my experimental error to be 4.20:1. This means that my percent deviation was around 200%. Question is, what are the reasons for the large percentage deviation.

    2. The attempt at a solution

    I know that one reason is obviously a reading error, but what about other stuff like non ideal gas behaviour, how would I elaborate on that?
    Last edited: Nov 16, 2007
  2. jcsd
  3. Nov 16, 2007 #2


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    Please elaborate on the method and your calculation.
  4. Nov 16, 2007 #3
    did you use a large glass tube for the experiment? if you did, the length of the tube might have something to do with it. a really short tube would make measurements difficult.
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