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Identifying Acids and Bases quiz #4

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Terms in this set (40)

  • Which is the strongest base?
    NaOH is the strongest base among common bases.
  • What is a hydronium ion?
    A hydronium ion is H3O+, formed when H+ associates with H2O.
  • What is not an example of a base?
    A substance that does not produce OH- ions, such as NaCl, is not a base.
  • Why do many metal ions produce acidic solutions when dissolved in water?
    Many metal ions hydrolyze water, releasing H+ ions and making the solution acidic.
  • What type of base is appropriate to deprotonate HA?
    A strong base, such as NaOH, would be appropriate to deprotonate HA.
  • What is the analyte in an acid-base titration experiment?
    The analyte is the substance being analyzed, usually the acid or base in the solution.
  • What is the conjugate base of HSO4-?
    The conjugate base of HSO4- is SO4^2-.
  • Which solution below has the highest concentration of hydroxide ions?
    A solution of a strong base, such as NaOH, has the highest concentration of hydroxide ions.
  • What do strong acids and strong bases have in common?
    Both strong acids and strong bases completely ionize in water.
  • What are properties of acid solutions?
    Acid solutions have a pH less than 7 and turn blue litmus paper red.
  • Is baking soda an acid or a base?
    Baking soda (NaHCO3) is a weak base.
  • What is phenolphthalein?
    Phenolphthalein is a pH indicator that turns pink in basic solutions.
  • How is an acid different from a base?
    An acid releases H+ ions in water, while a base releases OH- ions.
  • How does a weak acid solution differ from a strong acid solution?
    A weak acid solution only partially ionizes, while a strong acid solution completely ionizes.
  • What is the reaction between an acid and a base called?
    The reaction between an acid and a base is called neutralization.
  • What is the color of the indicator thymol blue in a solution that has a pH of 11?
    Thymol blue is blue in a solution with pH 11.
  • What is the conjugate acid of hydroxylamine?
    The conjugate acid of hydroxylamine (NH2OH) is NH3OH+.
  • What is the difference between a strong base and a weak base?
    A strong base completely ionizes in water, while a weak base only partially ionizes.
  • Bases produce which ions in aqueous solution?
    Bases produce hydroxide ions (OH-) in aqueous solution.
  • What is an example of a weak acid molecule?
    HF is a weak acid.
  • What compounds are Arrhenius bases?
    Compounds that produce OH- ions in water, such as NaOH and KOH, are Arrhenius bases.
  • What is one way a strong acid differs from a weak acid?
    A strong acid ionizes completely in water, while a weak acid does not.
  • Which of these molecules will release H+ ions when dissolved in water?
    Acids such as HCl and H2SO4 will release H+ ions when dissolved in water.
  • What is characteristic of a solution containing an acid?
    A solution containing an acid has a pH less than 7.
  • What is the conjugate acid of C6H5NH2?
    The conjugate acid of C6H5NH2 is C6H5NH3+.
  • Which molecule acts as a weak base?
    Ammonia (NH3) will act as a weak base.
  • What indicates a strong acid?
    A strong acid completely ionizes in water and has a low pH.
  • What ion do bases produce in aqueous solutions?
    Bases produce hydroxide ions (OH-) in aqueous solutions.
  • How does the hydronium ion form? What is its formula?
    The hydronium ion forms when H+ associates with H2O; its formula is H3O+.
  • What substance is most acidic?
    The substance with the lowest pH, such as HCl, would be most acidic.
  • Which compound is a weak acid?
    HF is a weak acid.
  • What is the conjugate base of CH3NH2?
    The conjugate base of CH3NH2 is CH3NH-.
  • Which formula represents an acid?
    A formula with H at the beginning, such as HCl or H2SO4, represents an acid.
  • What is the conjugate base of H3PO4?
    The conjugate base of H3PO4 is H2PO4-.
  • What is the chemical formula of the hydronium ion?
    H3O+ is the hydronium ion.
  • Which is an acid-conjugate base pair? NH4+ and NH3, NH4+ and H3O+, H2O and NH3, H2O and H3O+
    NH4+ and NH3 are an acid-conjugate base pair.
  • What is the hydronium ion?
    The hydronium ion is H3O+, formed when H+ associates with H2O.
  • What is characteristic of a base?
    A base turns red litmus paper blue and produces OH- ions in water.
  • What type of compound behaves as an acid when dissolved in water?
    A compound that releases H+ ions, such as HCl, behaves as an acid in water.
  • Which compound is an Arrhenius acid?
    A compound that produces H+ ions in water, such as HCl, is an Arrhenius acid.