Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Oxyhaemaglobin V CO2

  1. Sep 29, 2004 #1


    User Avatar
    Gold Member

    Hey. This probably seems like a bit of an odd question, but which do you suppose would weigh more? Blood with a somewhat average saturation or oxygen (like that which would be found in a healthy individual), or blood completely devoid of oxygen & saturated with carbon dioxide (as in if something were to die, and cease taking in oxygen)?

    [edit] Terribly sorry, I meant to put this in Biology. Silly me. [/edit]
    Last edited: Sep 29, 2004
  2. jcsd
  3. Sep 29, 2004 #2


    User Avatar
    Science Advisor
    Gold Member


    Hello, I think carboxyhaemoglobin weighs more than oxyhaemoglobin, since CO2 is 44 amu (atomic mass unit) whereas O2 is only 32 amu. Remember that there are four protoporphyrins in a haemoglobin molecule, but the result won't change. But binding constants are very different, to the advantage of oxygen.

    regards, chem_tr
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Oxyhaemaglobin V CO2
  1. Dissolving CO2 (Replies: 1)

  2. Co2 to Coal (Replies: 9)