Question 1

A 50.0 mL sample of 0.108 M H2SO4 is diluted to 250.0 mL. What is its new molarity?

Accepted Answer

A)  0.0216 M 
B)  0.108 M 
C)  0.184 M 
D)  0.461 M 
E)  0.542 M 
A)  0.0216 M 
B)  0.108 M 
C)  0.184 M 
D)  0.461 M 
E)  0.542 M A

Question 2

Which of the following is a reducing agent?

Accepted Answer

A)  I2 
B)  Na 
C)  O2 
D)  F2 
E)  Br2 
A)  I2 
B)  Na 
C)  O2 
D)  F2 
E)  Br2 B

Question 3

Determine the mass of BaSO4 that is produced by the reaction of 45.0 mL of 0.155 M H2SO4 and 60.0 mL of 0.125 M BaCl2. Assume that BaSO4 is totally insoluble.

Accepted Answer

A)  1.45 g 
B)  1.62 g 
C)  1.79 g 
D)  3.24 g 
E)  0.775 g 
A)  1.45 g 
B)  1.62 g 
C)  1.79 g 
D)  3.24 g 
E)  0.775 g B

Question 4

Which statement about the reaction below is true, given large amounts of reactants?

Accepted Answer

A)  NaNO3 is insoluble in water and will precipitate. 
B)  AgCl is insoluble in water and will precipitate. 
C)  Both NaNO3 and AgCl are insoluble in water and will precipitate. 
D)  AgNO3 is insoluble in water and no reaction will occur. 
E)  All compounds in the reaction are soluble in water and no reaction occurs. 
A)  NaNO3 is insoluble in water and will precipitate. 
B)  AgCl is insoluble in water and will precipitate. 
C)  Both NaNO3 and AgCl are insoluble in water and will precipitate. 
D)  AgNO3 is insoluble in water and no reaction will occur. 
E)  All compounds in the reaction are soluble in water and no reaction occurs.

Question 5

A 65.00 mL sample of HNO3 solution is neutralized by exactly 34.16 mL of 0.5841 M Ba(OH)2. What is the molarity of the HNO3 solution?

Accepted Answer

A)  0.1535 M 
B)  0.2880 M 
C)  0.3110 M 
D)  0.6139 M 
E)  2.594 M 
A)  0.1535 M 
B)  0.2880 M 
C)  0.3110 M 
D)  0.6139 M 
E)  2.594 M

Question 6

A 64.05 mL sample of 0.250 M CH3COOH is to be exactly neutralized with 0.500 M KOH. How many milliliters of KOH will be required?

Accepted Answer

A)  64.1 mL 
B)  32.0 mL 
C)  128 mL 
D)  16.0 mL 
E)  8.01 mL 
A)  64.1 mL 
B)  32.0 mL 
C)  128 mL 
D)  16.0 mL 
E)  8.01 mL

Question 7

What is reduced in the reaction below?

Accepted Answer

A)  CH4 
B)  CO2 
C)  O2 
D)  H2O 
E)  O2 and CO2 
A)  CH4 
B)  CO2 
C)  O2 
D)  H2O 
E)  O2 and CO2

Question 8

Which statement about strong acids is true?

Accepted Answer

A)  Strong acids are weak electrolytes. 
B)  Strong acids are very concentrated. 
C)  Strong acids are mostly converted to ions when dissolved in water. 
D)  Citric acid is a strong acid. 
E)  Strong acids react only with strong bases. 
A)  Strong acids are weak electrolytes. 
B)  Strong acids are very concentrated. 
C)  Strong acids are mostly converted to ions when dissolved in water. 
D)  Citric acid is a strong acid. 
E)  Strong acids react only with strong bases.

Question 9

Which statement about bases is true?

Accepted Answer

A)  Bases increase the hydroxide ion concentration of water when dissolved in it. 
B)  Bases increase the hydronium ion concentration of water when dissolved in it. 
C)  Bases turn phenolphthlalein colorless. 
D)  Bases react with limestone to produce gas bubbles. 
E)  Bases react with many metals to produce a flammable gas. 
A)  Bases increase the hydroxide ion concentration of water when dissolved in it. 
B)  Bases increase the hydronium ion concentration of water when dissolved in it. 
C)  Bases turn phenolphthlalein colorless. 
D)  Bases react with limestone to produce gas bubbles. 
E)  Bases react with many metals to produce a flammable gas.

Question 10

Which substance is reduced in the reaction below?

Accepted Answer

A)  CO 
B)  S 
C)  Na2S 
D)  Na2SO4 
E)  none of these 
A)  CO 
B)  S 
C)  Na2S 
D)  Na2SO4 
E)  none of these

Question 11

Determine the ammonium ion concentration of a solution that results when 4.53 g of (NH4)2SO4 is dissolved in water and diluted to exactly 100.0 mL.

Accepted Answer

A)  0.343 M 
B)  0.686 M 
C)  1.03 M 
D)  1.37 M 
E)  2.51 M 
A)  0.343 M 
B)  0.686 M 
C)  1.03 M 
D)  1.37 M 
E)  2.51 M

Question 12

What is the oxidation number of N in NH4+?

Accepted Answer

A)  -3 
B)  -1 
C)  0 
D)  +1 
E)  +3 
A)  -3 
B)  -1 
C)  0 
D)  +1 
E)  +3

Question 13

Oxalic acid, H2C2O4, reacts with Y(NO3)3 as shown by the equation below. What weight of yttrium oxalate is produced from 50.0 mL of 0.265 M Y(NO3)3 and excess oxalic acid? Assume that all of the yttrium oxalate is insoluble.

Accepted Answer

A)  1.46 g 
B)  1.82 g 
C)  2.93 g 
D)  3.64 g 
E)  5.85 g 
A)  1.46 g 
B)  1.82 g 
C)  2.93 g 
D)  3.64 g 
E)  5.85 g

Question 14

What is the oxidation number of O in Fe2O3?

Accepted Answer

A)  +2 
B)  -2 
C)  -3 
D)  -5 
E)  +5 
A)  +2 
B)  -2 
C)  -3 
D)  -5 
E)  +5

Question 15

Hydrochloric acid solutions are often standardized by the reaction below. How many grams of CaCO3 are required to exactly react with 50.0 mL of 0.155 M HCl?

Accepted Answer

A)  0.194 g 
B)  0.283 g 
C)  0.341 g 
D)  0.387 g 
E)  0.566 g 
A)  0.194 g 
B)  0.283 g 
C)  0.341 g 
D)  0.387 g 
E)  0.566 g

Question 16

Which reaction will not occur?

Accepted Answer

A)  Al(s) + SnCl2(aq) AlCl3(aq) + Sn(s) 
B)  H2(g) + AgNO3(aq) HNO3(aq) + Ag(s) 
C)  Mg(s) + CuSO4(aq) Cu(s) + MgSO4(aq) 
D)  Mg(s) + CaSO4(aq) MgSO4(aq) + Ca(s) 
E)  Ba(s) + HCl(aq) BaCl2(aq) + H2(g) 
A)  Al(s) + SnCl2(aq) AlCl3(aq) + Sn(s) 
B)  H2(g) + AgNO3(aq) HNO3(aq) + Ag(s) 
C)  Mg(s) + CuSO4(aq) Cu(s) + MgSO4(aq) 
D)  Mg(s) + CaSO4(aq) MgSO4(aq) + Ca(s) 
E)  Ba(s) + HCl(aq) BaCl2(aq) + H2(g)

Question 17

Which of the methods described below will yield 500 mL of a 0.100 M KMnO4 solution?

Accepted Answer

A)  Add exactly 500 mL of water to 7.90 g of KMnO4. 
B)  Add exactly 500 mL of water to KMnO4. 
C)  Dissolve 7.90 g of KMnO4 in water and dilute to exactly 500 mL. 
D)  Dissolve 15.8 g KMnO4 in water and dilute to exactly 500 mL. 
E)  Dilute 220 mL of 1.00 M KMnO4 to exactly 500 mL. 
A)  Add exactly 500 mL of water to 7.90 g of KMnO4. 
B)  Add exactly 500 mL of water to KMnO4. 
C)  Dissolve 7.90 g of KMnO4 in water and dilute to exactly 500 mL. 
D)  Dissolve 15.8 g KMnO4 in water and dilute to exactly 500 mL. 
E)  Dilute 220 mL of 1.00 M KMnO4 to exactly 500 mL.

Question 18

Which one or two substances are reduced in the reaction below?

Accepted Answer

A)  Al 
B)  Al and Cl2 
C)  Al and AlCl3 
D)  Cl2 and AlCl3 
E)  Cl2 
A)  Al 
B)  Al and Cl2 
C)  Al and AlCl3 
D)  Cl2 and AlCl3 
E)  Cl2

Question 19

How many moles of ions are in a 250.0 mL sample of 0.150 M NaCl?

Accepted Answer

The answer of How many moles of ions are in...

Question 20

Which substance is an oxidizing agent in the reaction below?

Accepted Answer

The answer of Which substance is an oxidizing agent in...

A 50.0 mL sample of 0.108 M H₂SO₄ is diluted to 250.0 mL. What is its new molarity?

Which of the following is a reducing agent?

Determine the mass of BaSO₄ that is produced by the reaction of 45.0 mL of 0.155 M H₂SO₄ and 60.0 mL of 0.125 M BaCl₂. Assume that BaSO₄ is totally insoluble.

Which statement about the reaction below is true, given large amounts of reactants?

A 65.00 mL sample of HNO₃ solution is neutralized by exactly 34.16 mL of 0.5841 M Ba(OH)₂. What is the molarity of the HNO₃ solution?

A 64.05 mL sample of 0.250 M CH₃COOH is to be exactly neutralized with 0.500 M KOH. How many milliliters of KOH will be required?

What is reduced in the reaction below?

Which statement about strong acids is true?

Which statement about bases is true?

Which substance is reduced in the reaction below?

Determine the ammonium ion concentration of a solution that results when 4.53 g of (NH₄)₂SO₄ is dissolved in water and diluted to exactly 100.0 mL.

What is the oxidation number of N in NH₄⁺?

Oxalic acid, H₂C₂O₄, reacts with Y(NO₃)₃ as shown by the equation below. What weight of yttrium oxalate is produced from 50.0 mL of 0.265 M Y(NO₃)₃ and excess oxalic acid? Assume that all of the yttrium oxalate is insoluble.

What is the oxidation number of O in Fe₂O₃?

Hydrochloric acid solutions are often standardized by the reaction below. How many grams of CaCO₃ are required to exactly react with 50.0 mL of 0.155 M HCl?

Which reaction will not occur?

Which of the methods described below will yield 500 mL of a 0.100 M KMnO₄ solution?

Which one or two substances are reduced in the reaction below?

How many moles of ions are in a 250.0 mL sample of 0.150 M NaCl?

Which substance is an oxidizing agent in the reaction below?

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Exam 5: Chemical Reactions

A 50.0 mL sample of 0.108 M H2SO4 is diluted to 250.0 mL. What is its new molarity?

Which of the following is a reducing agent?

Determine the mass of BaSO4 that is produced by the reaction of 45.0 mL of 0.155 M H2SO4 and 60.0 mL of 0.125 M BaCl2. Assume that BaSO4 is totally insoluble.

Which statement about the reaction below is true, given large amounts of reactants?

A 65.00 mL sample of HNO3 solution is neutralized by exactly 34.16 mL of 0.5841 M Ba(OH)2. What is the molarity of the HNO3 solution?

A 64.05 mL sample of 0.250 M CH3COOH is to be exactly neutralized with 0.500 M KOH. How many milliliters of KOH will be required?

What is reduced in the reaction below?

Which statement about strong acids is true?

Which statement about bases is true?

Which substance is reduced in the reaction below?

Determine the ammonium ion concentration of a solution that results when 4.53 g of (NH4)2SO4 is dissolved in water and diluted to exactly 100.0 mL.

What is the oxidation number of N in NH4+?

Oxalic acid, H2C2O4, reacts with Y(NO3)3 as shown by the equation below. What weight of yttrium oxalate is produced from 50.0 mL of 0.265 M Y(NO3)3 and excess oxalic acid? Assume that all of the yttrium oxalate is insoluble.

What is the oxidation number of O in Fe2O3?

Hydrochloric acid solutions are often standardized by the reaction below. How many grams of CaCO3 are required to exactly react with 50.0 mL of 0.155 M HCl?

Which reaction will not occur?

Which of the methods described below will yield 500 mL of a 0.100 M KMnO4 solution?

Which one or two substances are reduced in the reaction below?

How many moles of ions are in a 250.0 mL sample of 0.150 M NaCl?

Which substance is an oxidizing agent in the reaction below?

The Nature of Chemistry

Atoms and Elements

Chemical Compounds

Quantities of Reactants and Products

Energy and Chemical Reactions

Electron Configurations and the Periodic Table

Covalent Bonding

Molecular Structure

Gases and the Atmosphere

Liquids, Solids, and Materials

Chemical Kinetics: Rates of Reactions

Chemical Equilibrium

The Chemistry of Solutes and Solutions

Acids and Bases

Additional Aqueous Equilibria

Thermodynamics: Directionality of Chemical Reactions

Electrochemistry and Its Applications

Nuclear Chemistry

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A 50.0 mL sample of 0.108 M H₂SO₄ is diluted to 250.0 mL. What is its new molarity?

Determine the mass of BaSO₄ that is produced by the reaction of 45.0 mL of 0.155 M H₂SO₄ and 60.0 mL of 0.125 M BaCl₂. Assume that BaSO₄ is totally insoluble.

A 65.00 mL sample of HNO₃ solution is neutralized by exactly 34.16 mL of 0.5841 M Ba(OH)₂. What is the molarity of the HNO₃ solution?

A 64.05 mL sample of 0.250 M CH₃COOH is to be exactly neutralized with 0.500 M KOH. How many milliliters of KOH will be required?

Determine the ammonium ion concentration of a solution that results when 4.53 g of (NH₄)₂SO₄ is dissolved in water and diluted to exactly 100.0 mL.

What is the oxidation number of N in NH₄⁺?

Oxalic acid, H₂C₂O₄, reacts with Y(NO₃)₃ as shown by the equation below. What weight of yttrium oxalate is produced from 50.0 mL of 0.265 M Y(NO₃)₃ and excess oxalic acid? Assume that all of the yttrium oxalate is insoluble.

What is the oxidation number of O in Fe₂O₃?

Hydrochloric acid solutions are often standardized by the reaction below. How many grams of CaCO₃ are required to exactly react with 50.0 mL of 0.155 M HCl?

Which of the methods described below will yield 500 mL of a 0.100 M KMnO₄ solution?