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Exam
Name___________________________________
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MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
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1)
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Of the species below, only __________ is not an electrolyte.
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1) ______
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A)
NaCl
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B)
KOH
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C)
Rb2SO4
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D)
Ar
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E)
HCl
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2)
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The balanced molecular equation for complete neutralization of H2SO4 by KOH in aqueous solution is __________.
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2) ______
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A)
H2SO4 (aq) + 2KOH (aq) → 2H2O (l) + K2SO4 (s)
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B)
2H+ (aq) + 2KOH (aq) → 2H2O (l) + 2K+ (aq)
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C)
2H+ (aq) + 2OH- (aq) → 2H2O (l)
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D)
H2SO4 (aq) + 2KOH (aq) → 2H2O (l) + K2SO4 (aq)
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E)
H2SO4 (aq) + 2OH- (aq) → 2H2O (l) + SO42- (aq)
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3)
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Aqueous potassium chloride will react with which one of the following in an exchange (metathesis) reaction?
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3) ______
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A)
sodium bromide
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B)
barium nitrate
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C)
lead nitrate
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D)
calcium nitrate
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E)
sodium chloride
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4)
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The net ionic equation for formation of an aqueous solution of NiI2 accompanied by evolution of CO2 gas via mixing solid NiCO3 and aqueous hydriodic acid is __________.
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4) ______
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A)
NiCO3 (s) + 2H+ (aq) → H2O (l) + CO2 (g) + Ni2+ (aq)
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B)
NiCO3 (s) + 2HI (aq) → 2H2O (l) + CO2 (g) + NiI2 (aq)
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C)
NiCO3 (s) + I- (aq) → 2H2O (l) + CO2 (g) + Ni2+ (aq) + HI (aq)
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D)
NiCO3 (s) + 2HI (aq) → H2O (l) + CO2 (g) + Ni2+ (aq) + 2I- (aq)
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E)
2NiCO3 (s) + HI (aq) → 2H2O (l) + CO2 (g) + 2Ni2+ (aq)
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5)
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The net ionic equation for formation of an aqueous solution of Al(NO3)3 via mixing solid Al(OH)3 and aqueous nitric acid is __________.
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5) ______
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A)
Al(OH)3 (s) + 3H+ (aq) → 3H2O (l) + Al3+ (aq)
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B)
Al(OH)3 (s) + 3HNO3 (aq) → 3H2O (l) + Al(NO3)3 (aq)
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C)
Al(OH)3 (s) + 3NO3- (aq) → 3OH- (aq) + Al(NO3)3 (s)
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D)
Al(OH)3 (s) + 3HNO3 (aq) → 3H2O (l) + Al3+ (aq) + NO3- (aq)
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E)
Al(OH)3 (s) + 3NO3- (aq) → 3OH- (aq) + Al(NO3)3 (aq)
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6)
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The net ionic equation for the reaction between aqueous sulfuric acid and aqueous sodium hydroxide is __________.
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6) ______
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A)
H+ (aq) + OH- (aq) → H2O( l)
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B)
SO42- (aq) + 2Na+ (aq) → 2Na+ (aq) + SO42- (aq)
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C)
H+ (aq) + HSO4- (aq) + 2Na+ (aq) + 2OH- (aq) → 2H2O (l) + 2Na+ (aq) + SO42- (aq)
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D)
H+ (aq) + HSO4- (aq) + 2OH- (aq) → 2H2O (l) + SO42- (aq)
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E)
2H+ (aq) + SO42- (aq) + 2Na+ (aq) + 2OH- (aq) → 2H2O (l) + 2Na+ (aq) + SO42- (aq)
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7)
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In which reaction does the oxidation number of oxygen increase?
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7) ______
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A)
HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l)
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B)
2 H2O (l) → 2 H2 (g) + O2 (g)
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C)
2 SO2 (g) + O2 (g) → 2 SO3 (g)
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D)
Ba(NO3)2 (aq) + K2SO4 (aq) → BaSO4 (s) + 2 KNO3 (aq)
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E)
MgO (s) + H2O (l) → Mg(OH)2 (s)
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8)
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In which species does sulfur have the highest oxidation number?
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8) ______
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A)
S8 (elemental form of sulfur)
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B)
K2SO4
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C)
H2S
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D)
H2SO3
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E)
SO2
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9)
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The net ionic equation for the dissolution of zinc metal in aqueous hydrobromic acid is __________.
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9) ______
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A)
Zn (s) + 2H+ (aq) → Zn2+ (aq) + H2 (g)
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B)
Zn (s) + 2HBr (aq) → ZnBr2 (aq) + 2H+ (aq)
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C)
2Zn (s) + H+ (aq) → 2Zn2+ (aq) + H2 (g)
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D)
Zn (s) + 2Br- (aq) → ZnBr2 (aq)
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E)
Zn (s) + 2HBr (aq) → ZnBr2 (s) + 2H+ (aq)
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10)
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Oxidation is the __________ and reduction is the __________.
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10) ______
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A)
loss of oxygen, gain of electrons
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B)
gain of electrons, loss of electrons
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C)
loss of electrons, gain of electrons
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D)
gain of oxygen, loss of mass
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E)
gain of oxygen, loss of electrons
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11)
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Which one of the following is a correct expression for molarity?
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11) ______
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A)
mol solute/mL solvent
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B)
mmol solute/mL solution
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C)
mol solute/L solvent
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D)
μmol solute/L solution
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E)
mol solute/kg solvent
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12)
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A 0.200 M K2SO4 solution is produced by __________.
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12) ______
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A)
dissolving 43.6 g of K2SO4 in water and diluting to a total volume of 250.0 mL
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B)
dilution of 1.00 mL of 250 M K2SO3 to 1.00 L
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C)
diluting 20.0 mL of 5.00 M K2SO4 solution to 500.0 mL
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D)
dilution of 250.0 mL of 1.00 M K2SO4 to 1.00 L
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E)
dissolving 20.2 g of K2SO4 in water and diluting to 250.0 mL, then diluting 25.0 mL of this solution to a total volume of 500.0 mL
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13)
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What are the respective concentrations (M) of Fe3+ and I- afforded by dissolving 0.200 mol FeI3 in water and diluting to 725 mL?
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13) ______
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A)
0.276 and 0.828
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B)
0.828 and 0.276
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C)
0.145 and 0.0483
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D)
0.145 and 0.435
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E)
0.276 and 0.276
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14)
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Mixing 10.00 mL of an aqueous solution with 10.00 mL of water represents a __________.
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14) ______
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A)
twofold dilution
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B)
tenfold dilution
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C)
neutralization
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D)
titration
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E)
crystallization
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15)
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What volume (mL) of a concentrated solution of sodium hydroxide (6.00 M) must be diluted to 200. mL to make a 1.50 M solution of sodium hydroxide?
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15) ______
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A)
0.800
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B)
50.0
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C)
0.0500
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D)
45.0
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E)
800.
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16)
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Which one of the following substances is produced during the reaction of an acid with a metal hydroxide?
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16) ______
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A)
H2O
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B)
H2
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C)
CO2
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D)
O2
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E)
NaOH
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17)
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A 13.8 mL aliquot of 0.176 M H3PO4 (aq) is to be titrated with 0.110 M NaOH (aq). What volume (mL) of base will it take to reach the equivalence point?
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17) ______
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A)
22.1
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B)
7.29
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C)
199
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D)
20.9
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E)
66.2
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