Question 1

Select the classification for the following reaction. H2(g)  + Cl2(g)  → 2HCl(g)

Accepted Answer

A)  Combination
B)  Decomposition
C)  Displacement
D)  Acid-base
E)  None of these choices are correct.F) A) and D)
G) A) and B)

Question 2

The amount of calcium present in milk can be determined by adding oxalate to a sample and measuring the mass of calcium oxalate precipitated. What is the mass percent of calcium if 0.429 g of calcium oxalate forms in a 125-g sample of milk when excess aqueous sodium oxalate is added? Na2C2O4(aq)  + Ca2+(aq)  → CaC2O4(s)  + 2Na+(aq)

Accepted Answer

A)  0.107%
B)  0.202%
C)  0.343%
D)  1.10%
E)  1.37%F) B) and C)
G) D) and E)

Question 3

Potassium chloride, KCl, sodium sulfate, Na2SO4, glucose, C6H12O6, carbon dioxide, CO2 and ammonium phosphate, (NH4) 3PO4, are soluble in water. Which one produces the largest number of dissolved particles per mole of dissolved solute?

Accepted Answer

A)  KCI
B)  Na 2SO 4
C)  C 6H 12O 6
D)  CO 2
E)  (NH 4) 3PO 4F) B) and D)
G) A) and E)

Question 4

When 2.61 g of solid Na2CO3 is dissolved in sufficient water to make 250. mL of solution, the concentration of Na2CO3 is:

Accepted Answer

A)  0.0246 M
B)  10.4 M
C)  0.205 M
D)  0.0985 M
E)  0.141 MF) A) and E)
G) A) and D)

Question 5

Which of the following is a weak base?

Accepted Answer

A)  NH 3
B)  Ca(OH) 2
C)  Ba(OH) 2
D)  NaOH
E)  CH 3COOHF) A) and B)
G) All of the above

Question 6

Ammonia, NH3, produces hydroxide ions in aqueous solution by

Accepted Answer

A)  donating a proton to an acid molecule.
B)  donating a proton to a water molecule.
C)  donating a hydrogen ion to a water molecule.
D)  accepting an electron from an acid molecule.
E)  accepting a proton from a water molecule.F) C) and D)
G) A) and E)

Question 7

A 0.00100 mol sample of Ca(OH) 2 requires 25.00 mL of aqueous HCl for neutralization according to the reaction below. What is the concentration of the HCl? Equation: Ca(OH) 2(s)  + 2HCl(aq)  → CaCl2(aq)  + H2O(l)

Accepted Answer

A)  0.0200 M
B)  0.0400 M
C)  0.0800 M
D)  4.00 × 10 −5 M
E)  None of these choices are correct.F) B) and C)
G) C) and D)

Question 8

Which one of the following ionic compounds is insoluble in water?

Accepted Answer

A)  Na 3PO 4
B)  AgNO 3
C)  NaCl
D)  CaCO 3
E)  MgCl 2F) B) and C)
G) B) and E)

Question 9

Automobile batteries use 3.0 M H2SO4 as an electrolyte. How much 1.20 M NaOH will be needed to neutralize 225 mL of battery acid? H2SO4(aq)  + 2NaOH(aq)  → 2H2O(l)  + Na2SO4(aq)

Accepted Answer

A)  0.045 L
B)  0.28 L
C)  0.56 L
D)  0.90 L
E)  1.1 LF) B) and D)
G) A) and B)

Question 10

The correct method for preparing one liter of a 1.0 M solution of X is to dissolve exactly one mole of X in exactly one liter of water.

Accepted Answer

A) True 
 B)False

Question 11

What are the products when aqueous solutions of HCl and Na2CO3 react?

Accepted Answer

A)  NaCl and HCO 3
B)  NaCl, H 2O and CO 2
C)  NaCl and HCO 3−
D)  NaH and Cl 2CO 3
E)  None of these choices are correct.F) None of the above
G) C) and E)

Question 12

Which of the following is a strong acid?

Accepted Answer

A)  H 3PO 4
B)  HNO 3
C)  HF
D)  CH 3COOH
E)  H 2OF) All of the above
G) C) and D)

Question 13

Select the precipitate that forms when aqueous ammonium sulfide reacts with aqueous copper(II)  nitrate.

Accepted Answer

A)  CuS
B)  Cu 2S
C)  NH 4NO 3
D)  NH 4(NO 3) 2
E)  CuSO 4F) A) and E)
G) A) and D)

Question 14

Which of the following is most soluble in water?

Accepted Answer

A)  Benzene, C 6H 6
B)  Potassium nitrate, KNO 3
C)  Carbon tetrachloride, CCl 4
D)  Hexane, C 6H 14
E)  Ethane, C 2H 4F) C) and E)
G) A) and D)

Question 15

Select the classification for the following reaction. H2CO3(aq)  → H2O(l)  + CO2(g)

Accepted Answer

A)  Combination
B)  Decomposition
C)  Displacement
D)  Acid-base
E)  None of these choices are correct.F) A) and E)
G) A) and D)

Question 16

Select the net ionic equation for the reaction between lithium hydroxide and hydrobromic acid. LiOH(aq)  + HBr(aq)  → H2O(l)  + LiBr(aq)

Accepted Answer

A)  LiOH( aq) → Li +( aq) + OH −( aq) 
B)  HBr( aq) → H +( aq) + Br −( aq) 
C)  H +( aq) + OH −( aq) → H 2O( l) 
D)  Li +( aq) + Br −( aq) → LiBr( aq) 
E)  Li +(aq) + OH −(aq) + H +(aq) + Br −(aq) → H 2O(l) + LiBr(aq) F) B) and E)
G) A) and C)

Question 17

Which one of the following is not a redox reaction?

Accepted Answer

A)  2H 2O 2( aq) → 2H 2O( l) + O 2( g) 
B)  N 2( g) + 3H 2( g) → 2NH 3( g) 
C)  BaCl 2( aq) + K 2CrO 4( aq) → BaCrO 4( aq) + 2KCl( aq) 
D)  2Al( s) + Fe 2O 3( s) → Al 2O 3( s) + 2Fe( s) 
E)  2H 2O( g) → 2H 2( g) + O 2( g) F) A) and B)
G) B) and D)

Question 18

Select the classification for the following reaction. KOH(aq)  + HCl(aq)  → KCl(aq)  + H2O(l)

Accepted Answer

A)  Precipitation
B)  Acid-base
C)  Redox
D)  Combination
E)  None of these choices are correct.F) C) and D)
G) A) and E)

Question 19

An acid

Accepted Answer

A)  produces hydroxide ions when dissolved in water.
B)  changes the color of phenolphthalein indicator from colorless to pink.
C)  donates electrons in an electron transfer reaction.
D)  donates protons in a proton transfer reaction.
E)  None of these choices are correct.F) C) and D)
G) A) and C)

Question 20

Select the classification for the following reaction. Na2O(s)  + H2O(l)  → 2NaOH(aq)

Accepted Answer

A)  Combination
B)  Decomposition
C)  Displacement
D)  Acid-base
E)  PrecipitationF) A) and B)
G) C) and E)

Exam 4: Three Major Classes of Chemical Reactions

When 2.61 g of solid Na₂CO₃ is dissolved in sufficient water to make 250. mL of solution, the concentration of Na₂CO₃is:

Correct Answer
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Automobile batteries use 3.0 M H₂SO₄ as an electrolyte. How much 1.20 M NaOH will be needed to neutralize 225 mL of battery acid? H₂SO₄(aq) + 2NaOH(aq) → 2H₂O(l) + Na₂SO₄(aq)

Correct Answer
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Correct Answer
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Which one of the following ionic compounds is insoluble in water?

Correct Answer
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Select the classification for the following reaction. H₂(g) + Cl₂(g) → 2HCl(g)

Correct Answer
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Which one of the following is not a redox reaction?

Correct Answer
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The correct method for preparing one liter of a 1.0 M solution of X is to dissolve exactly one mole of X in exactly one liter of water.

Correct Answer
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Select the classification for the following reaction. KOH(aq) + HCl(aq) → KCl(aq) + H₂O(l)

Correct Answer
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Potassium chloride, KCl, sodium sulfate, Na₂SO₄, glucose, C₆H₁₂O₆, carbon dioxide, CO₂ and ammonium phosphate, (NH₄) ₃PO₄, are soluble in water. Which one produces the largest number of dissolved particles per mole of dissolved solute?

Correct Answer
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Select the classification for the following reaction. Na₂O(s) + H₂O(l) → 2NaOH(aq)

Correct Answer
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Which of the following is a weak base?

Correct Answer
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Ammonia, NH₃, produces hydroxide ions in aqueous solution by

Correct Answer
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An acid

Correct Answer
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A 0.00100 mol sample of Ca(OH) ₂ requires 25.00 mL of aqueous HCl for neutralization according to the reaction below. What is the concentration of the HCl? Equation: Ca(OH) ₂(s) + 2HCl(aq) → CaCl₂(aq) + H₂O(l)

Correct Answer
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Select the precipitate that forms when aqueous ammonium sulfide reacts with aqueous copper(II) nitrate.

Correct Answer
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What are the products when aqueous solutions of HCl and Na₂CO₃ react?

Correct Answer
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Select the classification for the following reaction. H₂CO₃(aq) → H₂O(l) + CO₂(g)

Correct Answer
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Select the net ionic equation for the reaction between lithium hydroxide and hydrobromic acid. LiOH(aq) + HBr(aq) → H₂O(l) + LiBr(aq)

Correct Answer
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Which of the following is a strong acid?

Correct Answer
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Which of the following is most soluble in water?

Correct Answer
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Exam 4: Three Major Classes of Chemical Reactions

When 2.61 g of solid Na2CO3 is dissolved in sufficient water to make 250. mL of solution, the concentration of Na2CO3 is:

Correct AnswerverifiedShow Answer

Automobile batteries use 3.0 M H2SO4 as an electrolyte. How much 1.20 M NaOH will be needed to neutralize 225 mL of battery acid? H2SO4(aq) + 2NaOH(aq) → 2H2O(l) + Na2SO4(aq)

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which one of the following ionic compounds is insoluble in water?

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Select the classification for the following reaction. H2(g) + Cl2(g) → 2HCl(g)

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Which one of the following is not a redox reaction?

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The correct method for preparing one liter of a 1.0 M solution of X is to dissolve exactly one mole of X in exactly one liter of water.

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Select the classification for the following reaction. KOH(aq) + HCl(aq) → KCl(aq) + H2O(l)

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Potassium chloride, KCl, sodium sulfate, Na2SO4, glucose, C6H12O6, carbon dioxide, CO2 and ammonium phosphate, (NH4) 3PO4, are soluble in water. Which one produces the largest number of dissolved particles per mole of dissolved solute?

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Select the classification for the following reaction. Na2O(s) + H2O(l) → 2NaOH(aq)

Correct AnswerverifiedShow Answer

Which of the following is a weak base?

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Ammonia, NH3, produces hydroxide ions in aqueous solution by

Correct AnswerverifiedShow Answer

An acid

Correct AnswerverifiedShow Answer

A 0.00100 mol sample of Ca(OH) 2 requires 25.00 mL of aqueous HCl for neutralization according to the reaction below. What is the concentration of the HCl? Equation: Ca(OH) 2(s) + 2HCl(aq) → CaCl2(aq) + H2O(l)

Correct AnswerverifiedShow Answer

Select the precipitate that forms when aqueous ammonium sulfide reacts with aqueous copper(II) nitrate.

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What are the products when aqueous solutions of HCl and Na2CO3 react?

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Select the classification for the following reaction. H2CO3(aq) → H2O(l) + CO2(g)

Correct AnswerverifiedShow Answer

Select the net ionic equation for the reaction between lithium hydroxide and hydrobromic acid. LiOH(aq) + HBr(aq) → H2O(l) + LiBr(aq)

Correct AnswerverifiedShow Answer

Which of the following is a strong acid?

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Which of the following is most soluble in water?

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When 2.61 g of solid Na₂CO₃ is dissolved in sufficient water to make 250. mL of solution, the concentration of Na₂CO₃is:

Correct Answer
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Automobile batteries use 3.0 M H₂SO₄ as an electrolyte. How much 1.20 M NaOH will be needed to neutralize 225 mL of battery acid? H₂SO₄(aq) + 2NaOH(aq) → 2H₂O(l) + Na₂SO₄(aq)

Correct Answer
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Correct Answer
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Correct Answer
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Select the classification for the following reaction. H₂(g) + Cl₂(g) → 2HCl(g)

Correct Answer
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Correct Answer
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Correct Answer
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Select the classification for the following reaction. KOH(aq) + HCl(aq) → KCl(aq) + H₂O(l)

Correct Answer
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Potassium chloride, KCl, sodium sulfate, Na₂SO₄, glucose, C₆H₁₂O₆, carbon dioxide, CO₂ and ammonium phosphate, (NH₄) ₃PO₄, are soluble in water. Which one produces the largest number of dissolved particles per mole of dissolved solute?

Correct Answer
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Select the classification for the following reaction. Na₂O(s) + H₂O(l) → 2NaOH(aq)

Correct Answer
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Correct Answer
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Ammonia, NH₃, produces hydroxide ions in aqueous solution by

Correct Answer
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Correct Answer
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A 0.00100 mol sample of Ca(OH) ₂ requires 25.00 mL of aqueous HCl for neutralization according to the reaction below. What is the concentration of the HCl? Equation: Ca(OH) ₂(s) + 2HCl(aq) → CaCl₂(aq) + H₂O(l)

Correct Answer
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Correct Answer
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What are the products when aqueous solutions of HCl and Na₂CO₃ react?

Correct Answer
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Select the classification for the following reaction. H₂CO₃(aq) → H₂O(l) + CO₂(g)

Correct Answer
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Select the net ionic equation for the reaction between lithium hydroxide and hydrobromic acid. LiOH(aq) + HBr(aq) → H₂O(l) + LiBr(aq)

Correct Answer
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Correct Answer
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Correct Answer
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