Polyprotic buffers deal mainly with triprotic acids and their different forms.
Polyprotic Buffers
Concept #1: A triprotic buffer can be approached in a way similar to diprotic buffers. The key difference is that a triprotic acid has 3 pKa values.
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Polyprotic buffers usually deal with triprotic buffers. It is imperative we remember the relationships between Ka and the different forms of a triprotic acid.
Depending on the forms used the format of the Henderson Hasselbalch equation can change.
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