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