True/False
Indicate whether the
statement is true or false.
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1.
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An acidic solution contains
more hydroxide ions than hydrogen ions.
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2.
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A neutral solution contains
more hydroxide ions than hydrogen ions.
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3.
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The Arrhenius model states that
acids and bases share electron pairs.
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Multiple
Choice
Identify the letter
of the choice that best completes the statement or answers the question.
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4.
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Acids generally release
H2 gas when they react
with
a. | nonmetals. | c. | active metals. | b. | semimetals. | d. | inactive metals. |
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5.
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Hydroxides of Group 1
metals
a. | are all strong
bases. | c. | are all
acids. | b. | are all weak bases. | d. | might be either strong or weak
bases. |
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6.
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What is the concentration of
H3O+ in pure
water?
a. | 10–7 M | c. | 55.4 M | b. | 0.7 M | d. | 107
M |
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7.
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What is the product of
H3O+ and
OH– concentrations in water?
a. | 10–28 | c. | 10–7 | b. | 10–14 | d. | 55.4 |
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8.
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Which expression represents the
pH of a solution?
a. | log[H3O+] | c. | log[OH–] | b. | –log[H3O+] | d. | –log[OH–] |
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9.
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A water solution whose pH is
4
a. | is always
neutral. | c. | is always
acidic. | b. | is always basic. | d. | might be neutral, basic, or
acidic. |
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10.
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If
[H3O+] = 8.26 × 10–5 M, what is the pH of the solution?
a. | 2.161 | c. | 4.083 | b. | 3.912 | d. | 8.024 |
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11.
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What is the hydroxide ion
concentration of a solution whose pH is 12.40?
a. | 2.5 × 10–2 M | c. | 8.9 × 10–2 M | b. | 4.4 × 10–2
M | d. | 1.0 × 10–1 M |
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12.
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What is the pH of blood, given
the hydrogen ion concentration is 4.0 x 10-8 M?
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13.
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Which model states that an acid
is a substance that contains hydrogen and ionizes to produce hydrogen ions?
a. | Arrhenius | c. | Lewis | b. | Bronsted-Lowry | d. | Hydrogen |
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14.
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A solution that contains equal
concentrations of hydrogen and hydroxide ions is _____.
a. | an acid | c. | neutral | b. | a base | d. | ionized |
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15.
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Calculate pH of an aqueous
solution of hydrogen chloride acid. Given the hydrogen ion concentration is 8.75 × 10–9
M.
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16.
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An aqueous solution has a pH of
2.7 at 298 K. Calculate the pOH of the aqueous solution.
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17.
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Determine the hydrogen ion
concentration of 0.650 M aqueous solution of NaOH. The ionization product constant for water,
KW, is 1.00 ×
10–14.
a. | 1.54 × 10–14
M | c. | 1.85 × 10–12
M | b. | 2.31 × 10–9
M | d. | 1.54 × 10–7
M |
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