polyprotic

(adjective)

Of an acid (or a base) that can donate (or accept) more than one proton; polybasic.

Related Terms

  • hydrolyzable
  • titration
  • acid salt
  • polybasic
  • diprotic
  • pKa
  • monoprotic acid

Examples of polyprotic in the following topics:

  • Diprotic and Polyprotic Acids

    • Diprotic and polyprotic acids contain multiple acidic protons that dissociate in distinct, sequential steps.
    • As their name suggests, polyprotic acids contain more than one acidic proton.
    • The above complex equations can determine the fractional concentration of various ions from polyprotic acids.
    • The titration curve of a polyprotic acid has multiple equivalence points, one for each proton.
    • Identify the key features that distinguish polyprotic acids from monoprotic acids.
  • Polyprotic Acid Titrations

    • Polyprotic acids, also known as polybasic acids, are able to donate more than one proton per acid molecule.
    • Polyprotic acid are able to donate more than one proton per acid molecule, in contrast to monoprotic acids that only donate one proton per molecule.
    • Certain types of polyprotic acids have more specific names, such as diprotic acid (two potential protons to donate) and triprotic acid (three potential protons to donate).
    • Recall the general shape of a pH vs equivalents graph generated by titrating a polyprotic acid.
  • Calculating Equilibrium Concentrations of Polyprotic Acids

    • Polyprotic acids have complex equilibria due to the presence of multiple species in solution.
    • Polyprotic acids can lose more than one proton.
    • Common polyprotic acids include sulfuric acid (H2SO4), and phosphoric acid (H3PO4).
    • We can simplify the problem, depending on the polyprotic acid.
    • Solve equilibrium problems using the appropriate approximations for weak and strong polyprotic acids.
  • Weak Acids

    • If acids are polyprotic, each proton will have a unique Ka.
  • Acid-Base Titrations

    • It also discusses how to deal with polyprotic acids and bases with multiple hydroxides.
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