Organic Chemistry · Chapter 10: Nitrogen & Phosphorous Compounds

Question

At a physiological pH of 7.4, ____ predominate in nearly equal proportions.

Answer

At a physiological pH of 7.4, dihydrogen phosphate and hydrogen phosphate predominate in nearly equal proportions.
At a physiological pH of 7.4, dihydrogen phosphate and hydrogen phosphate predominate in nearly equal proportions.
Note: The pKa for the loss of the first hydrogen is 2.15; for the second, 7.20; and for the third, 12.32.

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