polyprotic

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.