We’re being asked to determine the [H+] and [OH-] of blood which has a pH of 7.40.
Recall that Kw is the autoionization constant of water, and is given by:
The average pH of normal arterial blood is 7.40. At normal body temperature (37oC), Kw=2.4 10-14.
Calculate [H+] and [OH-] for blood at this temperature.
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