Polyprotic acids such as H3PO4, can act as acid-base buffers______ – McqOptions

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1.	Polyprotic acids such as H3PO4, can act as acid-base buffers______
A.	only in combination with polyprotic bases
B.	if their concentration is kept low
C.	at pH values around neutrality
D.	at pH values around any of their pKa's
Answer» E.

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