Organic Chemistry · Chapter 10: Nitrogen & Phosphorous Compounds

Question

H2PO41- → HPO42- pKa is ____.

Answer

H2PO41- → HPO42- pKa is 7.20.
H 2 PO 4 1- → HPO 4 2- pK a is 7.20.
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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