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Polyprotic Acid definitions

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Terms in this set (15)

  • Polyprotic Acid
    An acid capable of donating more than one proton or hydrogen atom per molecule in an aqueous solution.
  • Triprotic Acid
    A type of polyprotic acid that can donate three protons or hydrogen ions per molecule.
  • Acidic Hydrogen
    A hydrogen atom in an acid that can be released as a proton (H+) in a chemical reaction.
  • Equilibrium Constant
    A value that expresses the ratio of products to reactants at equilibrium for a reversible chemical reaction.
  • Ka1
    The acid dissociation constant for the first ionization step of a polyprotic acid.
  • Ka2
    The acid dissociation constant for the second ionization step of a polyprotic acid.
  • Ka3
    The acid dissociation constant for the third ionization step of a triprotic acid.
  • Kb1
    The base dissociation constant for the first proton acceptance step of a polyprotic base.
  • Kb2
    The base dissociation constant for the second proton acceptance step of a polyprotic base.
  • Kb3
    The base dissociation constant for the third proton acceptance step of a triprotic base.
  • Kw
    The ion product constant of water, equal to 1.0 x 10^-14 at 25°C.
  • Intermediate Form
    A transitional state of a polyprotic acid or base after losing or gaining one or more protons.
  • Phosphoric Acid
    A common triprotic acid with the chemical formula H3PO4.
  • Aqueous Solution
    A solution in which the solvent is water.
  • pH
    A measure of the acidity or basicity of an aqueous solution, calculated as the negative logarithm of the hydrogen ion concentration.