Department of Chemistry and Chemical Biology

PPT Slide

Acid-Base Titrations

Titrations of Polyprotic Acids

• In polyprotic acids, each ionizable proton dissociates in steps.

• Therefore, in a titration there are n equivalence points corresponding to each ionizable proton.

• In the titration of Na2CO3 with HCl there are two equivalence points:
  • one for the formation of HCO3-
  • one for the formation of H2CO3.

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Last modified: Tuesday, April 01, 2003