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change of pressure or volume when a diatomic gas is ionized?

Discussion in 'Mathematics and Physics' started by unclejed613, May 14, 2018.

  1. unclejed613

    unclejed613 Well-Known Member

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    i'm usually pretty good at physics, but i am having difficulty finding an answer to this question:
    when a diatomic gas (He2 for instance) is ionized in a fixed size container, does the pressure double (or more due to free electrons) from the dissociation to a monatomic plasma?
    or... in a container with flexible walls, does it double it's volume?

    it's logical that this would happen, but i can't seem to find any experimental or theoretical information about this.
     
  2. Ratchit

    Ratchit Well-Known Member

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    Helium is not a diatomic gas at STP. It has a valance of zero. If it could be ionized, what difference would the mass of an extra electron or two added or subtracted to/from the mass of 2 protons plus 2 neutrons have? I would say the pressure change would be negligible.

    Ratch
     
  3. unclejed613

    unclejed613 Well-Known Member

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    yeah, you're right, helium doesn't have any open valence. maybe nitrogen or hydrogen would be a better choice.
     

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