Polyprotic acids/bases and titrations

[Jepstein30]

I've developed a pretty good intuition for weak acid/bases and titration and can approach questions about pka's, pH's and the like pretty confidently.

I get a little lost with polyprotic acid/bases though.

Any good resources out there? Any good tips/tricks?

I'm talking questions like "Which point in the titration curve will have the most bicarbonate?" and there's something about taking the average of the two pKa's to determine the pH of the titration at a certain point that I just cannot figure out.

Going to watch some videos on youtube but would love any tips/tricks you all have for this.

EDIT: What about determining pH for a polyprotic acid? Any shortcuts rather than using 2 ICE tables? Or can we just assume that the pH will be largely determined by the first acidic proton and not affected much by the second if the Ka's are largely different?

---

Members don't see this ad.