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Arrhenius Acid and Base quiz

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Terms in this set (15)

  • Who developed the most general early definition for acids and bases?
    Arrhenius developed the most general early definition for acids and bases near the end of the 19th century.
  • According to Arrhenius, what ion must an acid produce in water?
    An Arrhenius acid must increase the concentration of H+ ions when dissolved in water.
  • What is the fundamental ion produced by an Arrhenius base in water?
    An Arrhenius base increases the concentration of OH- ions when dissolved in water.
  • What is a key limitation of the Arrhenius definition of acids and bases?
    The Arrhenius definition only applies to substances in aqueous (water) solutions and does not describe behavior outside of water.
  • Give an example of an Arrhenius acid and its dissociation in water.
    HCl is an Arrhenius acid; it dissociates in water to form H+ and Cl- ions.
  • Does the Arrhenius definition apply to both strong and weak acids?
    Yes, as long as the compound produces H+ ions in water, it is considered an Arrhenius acid.
  • What is required for a compound to be classified as an Arrhenius base?
    It must produce OH- ions when dissolved in water.
  • Provide an example of an Arrhenius base and its dissociation in water.
    NaOH is an Arrhenius base; it dissociates in water to form Na+ and OH- ions.
  • Why can't a compound that doesn't produce OH- in water be an Arrhenius base?
    Because the Arrhenius definition requires the production of OH- ions for a substance to be classified as a base.
  • What is the solvent required for the Arrhenius definition to apply?
    The solvent must be water (aqueous solution) for the Arrhenius definition to apply.
  • What is a major criticism of the Arrhenius definition regarding acids?
    It only considers compounds with H+ as acids, which is not always accurate.
  • How does the Arrhenius definition compare to later definitions of acids and bases?
    The Arrhenius definition is broader and less precise than later definitions.
  • What are the two fundamental ions in the Arrhenius theory?
    The two fundamental ions are H+ (for acids) and OH- (for bases).
  • Can a substance be an Arrhenius acid or base outside of water?
    No, the Arrhenius definition only applies to substances dissolved in water.
  • What must you identify in the products of a compound dissolved in water to classify it as an Arrhenius acid or base?
    You must look for the presence of H+ ions (acid) or OH- ions (base) in the products.