PO2 and PCO2

Discussion in 'Feedback and Suggestions' started by Jim Hunter, Jan 27, 2013.

  1. Jim Hunter

    Thread Starter New Member

    Jan 27, 2013
    9
    4
    The discussion of pH on this page concludes with the statement:

    "Incidentally, the "p" prefix is also used with other types of chemical measurements where a logarithmic scale is desired, pCO2 (Carbon Dioxide) and pO2 (Oxygen) being two such examples."

    P_{O_{2}} and P_{CO_{2}} refer to partial pressure of oxygen and carbon dioxide, respectively, and are not logarithmic.
     
  2. Wendy

    Moderator

    Mar 24, 2008
    20,765
    2,536
    So how would you correct it?

    I generally show a before and after statement.
     
  3. Jim Hunter

    Thread Starter New Member

    Jan 27, 2013
    9
    4
    I would delete that sentence. It doesn't really add anything, and the only other example of that notation that I can think of right now is the dissociation constant of a weak acid (pK_a), which also wouldn't add to the reader's understanding of the concept of pH.
     
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