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Identifying Acids and Bases quiz #3

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Terms in this set (39)

  • What color is phenolphthalein when the solution is acidic?
    Phenolphthalein is colorless in acidic solutions.
  • Which is a conjugate acid?
    A conjugate acid is formed when a base gains a proton, such as NH4+ from NH3.
  • Which is the strongest acid listed in the table?
    The acid that ionizes most completely in water is the strongest.
  • Which compound is considered the strongest acid among common acids?
    Among common acids, HI or HClO4 is the strongest.
  • What characteristic defines the weakest base among compounds like NH3 and NaOH?
    A base that ionizes the least in water, such as NH3 compared to NaOH, is the weakest.
  • What characteristic defines the weakest base among compounds?
    A base that ionizes the least in water, such as NH3 compared to NaOH, is the weakest.
  • What characteristic defines the weakest acid among compounds?
    The acid that ionizes the least in water is the weakest.
  • Which of these is the strongest acid?
    Among common acids, HI or HClO4 is the strongest.
  • What is the conjugate base of water?
    The conjugate base of water (H2O) is hydroxide ion (OH-).
  • What are the reactants in a neutralization reaction?
    The reactants in a neutralization reaction are an acid and a base.
  • Which is an acid-conjugate base pair?
    An acid-conjugate base pair is two species differing by one proton, such as NH4+ and NH3.
  • How do acids taste compared to bases?
    Acids taste sour, while bases taste bitter.
  • What characteristic defines the weakest acid?
    The acid that ionizes the least in water is the weakest.
  • What kinds of cations act as weak acids?
    Cations such as NH4+ and some metal ions act as weak acids.
  • What defines an acid-base reaction?
    A reaction where an acid donates a proton to a base is an acid-base reaction.
  • Which is a stronger base?
    A base that ionizes more completely in water, such as NaOH, is stronger than NH3.
  • What breaks apart to produce a hydrogen ion and a hydroxide ion?
    Water can dissociate to produce H+ and OH- ions.
  • What is true about the ionization of weak acids in water?
    Weak acids only partially ionize in water.
  • Which ion is produced when an Arrhenius base is dissolved in water?
    An Arrhenius base produces hydroxide ions (OH-) in water.
  • What characterizes a weak base in aqueous solution?
    A weak base only partially ionizes in water.
  • Which is the conjugate acid in the following reaction?
    The conjugate acid is the species formed when the base gains a proton.
  • Give an example of a weak acid in aqueous solution.
    HF is a common example of a weak acid in aqueous solution.
  • What defines a compound that is not an Arrhenius acid?
    A compound that does not produce H+ ions in water is not an Arrhenius acid.
  • Which acid-base chemical reaction is irreversible?
    A reaction involving a strong acid and a strong base is typically irreversible.
  • Which is the stronger acid?
    The acid that ionizes more completely in water is the stronger acid.
  • What is the conjugate base of CH3OH?
    The conjugate base of CH3OH is CH3O-.
  • What is the conjugate base of HSO3-?
    The conjugate base of HSO3- is SO3^2-.
  • What is the hydronium ion and its formula?
    The hydronium ion is H3O+ and represents a hydrated hydrogen ion.
  • What is the conjugate acid of NH3?
    The conjugate acid of NH3 is NH4+.
  • Which acid is not strong in aqueous solution?
    HF is not a strong acid in aqueous solution.
  • Which species would increase the concentration of hydroxide in solution the most?
    A strong base such as NaOH would increase hydroxide concentration the most.
  • What is the chemical formula for the conjugate base of water?
    The chemical formula for the conjugate base of water is OH-.
  • What is the conjugate base of NH3?
    The conjugate base of NH3 is NH2-.
  • Which of these has the highest H+ concentration?
    A solution of a strong acid, such as HCl, has the highest H+ concentration.
  • What is an example of a weak acid?
    HF is a weak acid.
  • What is an example of a strong base?
    NaOH is a strong base.
  • What is the strongest acid?
    Among common acids, HI or HClO4 is the strongest.
  • What is the chemical formula of the hydronium ion?
    H3O+ is the hydronium ion.
  • How is the conjugate base made?
    The conjugate base is made by removing a proton (H+) from an acid.