17. Acid and Base Equilibrium
Triprotic Acids and Bases
Multiple Choice
Multiple ChoiceWhich of the following statements about the ionization of a polyprotic acid, such as H3PO4, is false?
A
Ka1 is much larger than Ka2 and Ka3<.sub>.
B
Ka1 = Kw
C
We can assume [H2PO4−] = [H3O+].
D
[HPO42−] ≈ Ka2
E
The protons are removed from the polyprotic acid in a stepwise fashion.
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