True/False
Indicate whether the sentence or statement is true
or false.
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1.
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Increasing
temperature always increases the solubility of a solute in a solvent.
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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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2.
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One
physical property of acids is a _____. a. | slippery feel | c. | sour taste | b. | pink
color | d. | presence of
hydrogen | | | | |
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3.
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Ammonia is considered to be a base because it _____. a. | loses hydroxide
ions in water | c. | contains
hydrogen | b. | contains the hydroxide ion | d. | accepts hydrogen ions | | | | |
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4.
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An
acidic solution would have a pH of _____. a. | less than 7 | c. | 7 or above | b. | more than
7 | d. | 7 or
below | | | | |
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5.
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In a
solution, the substance that is being dissolved is the ____. a. | gas | c. | solute | b. | liquid | d. | solvent | | | | |
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6.
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A substance
that does NOT conduct an electric current when it forms a solution is a(n) ____. a. | electrolyte | c. | liquid | b. | nonelectrolyte | d. | solid | | | | |
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7.
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A solution
that contains all of the solute it can hold at a given temperature is ____. a. | diluted | c. | supersaturated | b. | saturated | d. | unsaturated | | | | |
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8.
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Increasing
the surface area of a solid ____. a. | causes the solid to ionize | c. | slows the rate of solution | b. | has no effect on the
rate of solution | d. | speeds the rate of
solution | | | | |
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9.
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When a gas
is dissolved in a liquid, the gas dissolves faster if the liquid is ____. a. | cooled | c. | heated | b. | an electrolyte | d. | under low pressure | | | | |
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10.
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Which of the
following combinations would increase the solubility of a gas in a liquid? a. | Decrease the pressure
and decrease the temperature. | b. | Decrease the pressure and increase the
temperature. | c. | Increase the pressure and decrease the
temperature. | d. | Increase the pressure and increase the
temperature. | | |
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11.
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Which of the
following will speed up the dissolving of a solid solute in water? a. | Cool the
solution. | c. | Grind up the
solvent. | b. | Freeze the solute. | d. | Stir the solution. | | | | |
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12.
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A(n) ____ is
a substance that produces H+ ions in a water solution. a. | acid | c. | salt | b. | base | d. | alcohol | | | | |
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13.
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A(n) ____ is
a substance that produces OH- ions in a solution. a. | acid | c. | salt | b. | base | d. | alcohol | | | | |
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14.
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____
measures how acidic or basic a substance is. a. | An ester | c. | pH | b. | A base | d. | The hydronium ion | | | | |
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15.
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____ change
color in the presence of an acid or a base. a. | Acids | c. | Buffers | b. | Glycerins | d. | Indicators | | | | |
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16.
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A bitter
taste and a slippery feel are clues that a solution is probably a(n) ____. a. | acid | c. | hydrate | b. | base | d. | salt | | | | |
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17.
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Ammonia is a
weak base because it produces ____ ions in solution. a. | strong | c. | only a
few | b. | weak | d. | many | | | | |
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18.
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____ of a
solution refers to the ease with which an acid or base forms ions in solution. a. | Acidity | c. | pH | b. | Concentration | d. | Strength | | | | |
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19.
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In a ____
reaction, an acid and a base produce a salt and a water. a. | decomposition | c. | dilute | b. | neutralization | d. | concentrated | | | | |
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20.
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Figure 25-1
Figure 25-1 shows ____. a. | neutralization of an
acid | c. | ionization of an
acid | b. | neutralization of a
base | d. | ionization of a
base | | | | |
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21.
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Coffee has a
pH of about 5. Coffee is ____. a. | extremely acidic | c. | somewhat acidic | b. | extremely
basic | d. | somewhat
basic | | | | |
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22.
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Which
mixture contains visible particles that settle out unless the mixture is stirred? a. | a
colloid | c. | a
solution | b. | a homogeneous mixture | d. | a suspension | | | | |
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23.
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Which
mixture contains particles that are in a dispersed phase and do not settle out? a. | a
colloid | c. | a
solution | b. | a homogeneous mixture | d. | a suspension | | | | |
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24.
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A
substance whose water solution is a good conductor of electricity is a(n) a. | nonelectrolyte. | c. | nonpolar
substance. | b. | electrolyte. | d. | solute. | | | | |
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25.
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Stirring increases the rate of dissolution because it a. | raises the
temperature. | b. | lowers the temperature. | c. | brings fresh
solvent into contact with the solute. | d. | decreases the surface area of the
solute. | | |
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26.
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Which
of the following will dissolve most rapidly? a. | sugar cubes in cold water | c. | powdered sugar in cold water | b. | sugar cubes in
hot water | d. | powdered sugar
in hot water | | | | |
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27.
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Which
of the following will dissolve most slowly? a. | large salt crystals in unstirred
water | c. | small salt
crystals in unstirred water | b. | large salt crystals in stirred
water | d. | small salt
crystals in stirred water | | | | |
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28.
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Raising solvent temperature causes solvent-solute collisions to
become a. | less frequent
and more energetic. | c. | less frequent
and less energetic. | b. | more frequent and more
energetic. | d. | more frequent
and less energetic. | | | | |
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29.
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If
the amount of solute present in a solution at a given temperature is less than the maximum amount
that can dissolve at that temperature, the solution is said to be a. | saturated. | c. | supersaturated. | b. | unsaturated. | d. | concentrated. | | | | |
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30.
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What
is the molarity of a solution that contains 0.202 mol KCl in 7.98 L solution? a. | 0.0132
M | c. | 0.459
M | b. | 0.0253
M | d. | 1.363
M | | | | |
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31.
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What
is the molarity of a solution that contains 125 g NaCl in 4.00 L solution? (molar mass of NaCl =
58.44 g/mol) a. | 0.535
M | c. | 8.56
M | b. | 2.14
M | d. | 31.3
M | | | | |
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32.
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How
many moles of HCl are present in 0.70 L of a 0.33 M HCl solution? (molar mass of HCl = 36.46
g/mol) a. | 0.23
mol | c. | 0.38
mol | b. | 0.28
mol | d. | 0.47
mol | | | | |
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33.
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An
NaOH solution contains 1.90 mol of NaOH, and its concentration is 0.555 M. What is its volume? (molar
mass of NaOH = 40.00 g/mol) a. | 0.623 L | c. | 1.05 L | b. | 0.911
L | d. | 3.42
L | | | | |
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34.
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How
many milliliters of a 0.171 M solution contain 1.00 g of NaCl? (molar mass of NaCl = 58.44
g/mol) a. | 100.
mL | c. | 171
mL | b. | 1000.
mL | d. | 17.1
mL | | | | |
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35.
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An
Arrhenius acid contains a. | hydrogen that does not ionize. | b. | hydrogen that
ionizes to form hydrogen ions. | c. | oxygen that ionizes to form hydroxide
ions. | d. | oxygen that ionizes to form oxygen
ions. | | |
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36.
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A
Brønsted-Lowry acid is a(n) a. | electron-pair acceptor. | c. | proton acceptor. | b. | electron-pair
donor. | d. | proton
donor. | | | | |
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37.
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In
the equation HCl(g) + H2O(l) ® H3O+(aq) +
Cl–(aq), which species is a Brønsted-Lowry acid? a. | HCl | c. | Cl– | b. | H2O | d. | None of the above | | | | |
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38.
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A
Brønsted-Lowry base is a(n) a. | producer of OH–
ions. | c. | electron-pair
donor. | b. | proton acceptor. | d. | electron-pair acceptor. | | | | |
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39.
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In
the reaction represented by the equation  ,
H2O is a(n) a. | Brønsted-Lowry acid. | c. | Brønsted-Lowry base. | b. | Lewis
base. | d. | Arrhenius. | | | | |
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40.
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According to the graph above, about how many grams of KBr are needed to make a
saturated soultion in 100 g of water at 30° C?
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41.
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According to the graph, how many grams of KCl wil form a saturated solution in 100 g
of water at 60°C?
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42.
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A
solution in which the solvent is water is called ___. a. | concentrated | c. | aqueous | b. | dilute | d. | amphoteric | | | | |
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43.
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A
solution is made by dissolving 17.0 g of Lithium iodide in enough water to make 500.0 mL of solution.
What is the molarity of the solution? a. | 34 M | c. | 0.25 M | b. | 0.034
M | d. | 2.54 x
10-4 | | | | |
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44.
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Calculate the molarity of a water soluiton of CaCl2 made by
dissolving 612 g of CaCl2 in 5.04 L of solution. a. | 1.09
M | c. | 0.775
M | b. | 22.0
M | d. | 1.88
M | | | | |
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45.
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All
of the following are colligative properties EXCEPT ___. a. | boiling point
elevation | c. | vapor pressure
increasing | b. | freezing point depression | d. | osmotic pressure | | | | |
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46.
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What
is the molarity of an aqueous solution containing 14.2 g of NaCl dissolved in 2000 mL of
solution? a. | 7.1
M | c. | 0.12
M | b. | 0.24
M | d. | 3.6
M | | | | |
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47.
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The
substances produced when KOH neutralizes HCl are a. | KH + ClOH | c. | KClH + OH | b. | KCl +
H2O | d. | HOH +
KCl2 | | | | |
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48.
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Which
expression represents the pH of a solution? a. | log [H+] | c. | antilog [-pOH] | b. | - log
[H+] | d. | -antilog
[pOH] | | | | |
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49.
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If
50.0 ml of a 0.500 M solution of HCl is diluted to 150.0 ml, what will the final molarity
be? a. | 0.667 | c. | 1.50 | b. | 5.99 | d. | 0.167 | | | | |
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50.
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What
would the final volume of a solution be if 5.0 mL of a 0.040 M stock solution is diluted to 0.030
M? a. | 6.67 | c. | 0.00244 | b. | 0.150 | d. | 416 | | | | |
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