Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Which equation represents the reaction of a
Brønsted-Lowry base with water?
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2.
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At a given temperature a sample of pure water has a
pH = 7.10. Which of the following is true?
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3.
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Consider the following indicator
equilibrium:
 What is
the effect of adding HCl to a blue sample of this indicator?
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4.
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Oxalic acid dihydrate is a pure, stable,
crystalline substance. Which of the following
describes one of its uses in acid-base
titrations?
a. | buffer | c. | chemical indicator | b. | primary
standard | d. | stoichiometric indicator |
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5.
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Which of the following would be used to prepare an
acidic buffer solution?
a. | HF and H3O+ | c. | NH3
and NH4Cl | b. | H2S and NaHS | d. | HNO3 and NaNO3 |
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6.
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Which acid forms a 0.10 mol/L solution with the
highest pH?
a. | acetic acid | c. | oxalic
acid | b. | nitrous acid | d. | phosphoric
acid |
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7.
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What is the pH of a solution if [H3O+] is 0.0001 mol/L?
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8.
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Which is a monoprotic acid?
a. | HCOOH(aq) | c. | H3BO3(aq) | b. | H2CO3(aq) | d. | NaOH(aq) |
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9.
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Which best describes a 10.0 mol/L solution of
hydrofluoric acid?
a. | strong and concentrated | c. | weak and concentrated | b. | strong and
dilute | d. | weak and dilute |
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10.
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A flask containing an unknown solution of
concentration 0.100 mol/L, is tested with three
indicators. Based on the data below, what is the
pH of this solution?
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