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Identifying Acids and Bases quiz #8

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Termini in questo insieme (40)

  • Conjugate base of HBrO
    The conjugate base of HBrO is BrO-.
  • Is HBrO3 an acid or base?
    HBrO3 is an acid.
  • The conjugate acid of HPO4^2- is
    The conjugate acid of HPO4^2- is H2PO4-.
  • NaOH is a Brønsted-Lowry base because
    NaOH accepts a proton (H+) in a reaction.
  • Bases dissolve _____ and _____.
    Bases dissolve in water and produce OH- ions.
  • A compound that donates hydrogen ions to a solution is __________.
    A compound that donates hydrogen ions to a solution is an acid.
  • The conjugate acid of HPO4^2- is
    The conjugate acid of HPO4^2- is H2PO4-.
  • A 0.01 M solution of a substance has a pH of 2. What can you conclude about this substance?
    The substance is a strong acid.
  • The conjugate base of HPO4^2- is
    The conjugate base of HPO4^2- is PO4^3-.
  • Write the formula of the conjugate acid of the Brønsted-Lowry base, NH2-.
    The conjugate acid of NH2- is NH3.
  • A weak acid completely ionizes in water to produce both a conjugate base and a H3O+ ion.
    False. A weak acid only partially ionizes in water.
  • A substance that decreases [H+] and increases pH when it dissociates in water is called a(n)
    A base.
  • A substance that gains electrons and becomes more negative is ___.
    A substance that gains electrons is reduced.
  • What is the conjugate acid of the Brønsted-Lowry base, HPO4^2-?
    The conjugate acid of HPO4^2- is H2PO4-.
  • HBrO3 strong or weak?
    HBrO3 is a strong acid.
  • Identify all correct statements about the ionization of water.
    Water ionizes to form H+ (or H3O+) and OH- ions.
  • Strong acids and bases
    Strong acids and bases completely ionize in water.
  • When a solution has an equal number of hydrogen and hydroxide ions, the solution is considered:
    The solution is considered neutral.
  • When dissolved in water, an acid or a base breaks down into
    An acid or base breaks down into ions when dissolved in water.
  • Substances that can either take up hydrogen ions or release hydroxide ions into water are called
    Amphoteric substances.
  • When working with acids, always _____ to avoid chemical splattering.
    Always add acid to water to avoid chemical splattering.
  • Acids tend to taste:
    Acids tend to taste sour.
  • If an acid is splashed on your skin, wash at once with
    Wash at once with plenty of water.
  • Turn this molecule into its Brønsted-Lowry conjugate base.
    Remove a proton (H+) from the molecule to form its conjugate base.
  • Conjugate acid of NH3
    The conjugate acid of NH3 is NH4+.
  • An unknown substance turns methyl orange solution red. This shows that the substance
    The substance is acidic.
  • Identify each substance as an acid or a base: liquid drain cleaner, pH 13.5; milk, pH 6.6
    Liquid drain cleaner is a base; milk is slightly acidic.
  • Is bleach an acid or base?
    Bleach is a base.
  • Is KOH a strong base?
    Yes, KOH is a strong base.
  • Is KOH an acid or base?
    KOH is a base.
  • HNO3 strong or weak?
    HNO3 is a strong acid.
  • Is HNO3 a strong acid?
    Yes, HNO3 is a strong acid.
  • Is oxygen a reactant or product?
    Oxygen can be either a reactant or product depending on the reaction.
  • Is HCO3- a strong acid?
    HCO3- is not a strong acid; it is a weak acid.
  • What is the conjugate acid of HPO2^2-?
    The conjugate acid of HPO2^2- is H2PO2-.
  • When dissociated in water, which of these is released by acids?
    Acids release H+ ions when dissociated in water.
  • Classify each of these compounds as an Arrhenius acid, an Arrhenius base, or neither.
    Arrhenius acids produce H+; Arrhenius bases produce OH-; others are neither.
  • Draw the conjugate base for the following acid.
    Remove a proton (H+) from the acid to draw its conjugate base.
  • Classify these salts as acidic, basic, or neutral.
    Salts from strong acid/strong base are neutral; strong acid/weak base are acidic; weak acid/strong base are basic.
  • Classify each of the following as acidic, basic, or neutral.
    Acidic: pH < 7; Basic: pH > 7; Neutral: pH = 7.