Question 1

Identify the oxidizing agent in the following chemical reaction.
2MnO4- + 5H2SO3 $\rarr$ 2Mn2+ + 5SO42- + 4H+ + 3H2O

Accepted Answer

A)  MnO4- 
B)  H2SO3 
C)  Mn2+ 
D)  SO42- 
E)  H+ 
A)  MnO4- 
B)  H2SO3 
C)  Mn2+ 
D)  SO42- 
E)  H+

Question 2

In the following chemical reaction the oxidizing agent is 5H2O2 + 2MnO4- + 6H+ $\rarr$ 2Mn2+ + 8H2O + 5O2

Accepted Answer

A)  H2O2. 
B)  MnO4-. 
C)  H+. 
D)  Mn2+. 
E)  O2. 
A)  H2O2. 
B)  MnO4-. 
C)  H+. 
D)  Mn2+. 
E)  O2.

Question 3

The highest possible oxidation number of carbon is

Accepted Answer

A)  +8. 
B)  +6. 
C)  +4. 
D)  +2. 
E)  -4. 
A)  +8. 
B)  +6. 
C)  +4. 
D)  +2. 
E)  -4.

Question 4

What element is reduced in the following chemical reaction
Cu + 2H2SO4 $\rarr$  CuSO4 + SO2 + 2H2O

Accepted Answer

A)  Cu 
B)  H 
C)  S 
D)  O 
E)  H2O 
A)  Cu 
B)  H 
C)  S 
D)  O 
E)  H2O

Question 5

Identify the reducing agent in the following chemical reaction.
5Fe2+(aq) + MnO4-(aq)+ 8H+(aq) $\rarr$ 5Fe3+(aq) + Mn2+(aq) + 4H2O(l)

Accepted Answer

A)  Fe2+ 
B)  MnO4- 
C)  H+ 
D)  Mn2+ 
E)  Fe3+ 
A)  Fe2+ 
B)  MnO4- 
C)  H+ 
D)  Mn2+ 
E)  Fe3+

Question 6

Sugar dissolves in water, therefore it is a strong electrolyte.

Accepted Answer

A) True 
 B)False

Question 7

For the perchlorate ion ClO4- , what are the oxidation states of the Cl and O, respectively

Accepted Answer

A)  - 1, - 2 
B)  +8, - 2 
C)  +7, - 2 
D)  +6, - 2 
E)  +2, - 1 
A)  - 1, - 2 
B)  +8, - 2 
C)  +7, - 2 
D)  +6, - 2 
E)  +2, - 1

Question 8

What mass of Li3PO4 is needed to prepare 500. mL of a solution having a lithium ion concentration of 0.175 M

Accepted Answer

A)  6.75 g 
B)  10.1 g 
C)  19.3 g 
D)  30.4 g 
E)  3.38 g 
A)  6.75 g 
B)  10.1 g 
C)  19.3 g 
D)  30.4 g 
E)  3.38 g

Question 9

H2O is acting as a Brønsted acid in the following reaction.
NH3 + H2O $\rarr$NH4+ + OH-

Accepted Answer

A) True 
 B)False

Question 10

How many total electrons are transferred in the following reaction
4 P(s) + 5O2(g) $\rarr$  2P2O5(s)

Accepted Answer

A)  5 
B)  10 
C)  15 
D)  20 
E)  25 
A)  5 
B)  10 
C)  15 
D)  20 
E)  25

Question 11

A 350. mL solution of 0.150 M HNO3(aq) is mixed with a solution of 230. mL of 0.240 M HCl(aq). How many moles of H+(aq) are present in the final solution

Accepted Answer

A)  0.0525 moles H+ 
B)  0.108 moles H+ 
C)  0.186 moles H+ 
D)  0.0539 moles H+ 
E)  0.195 moles H+ 
A)  0.0525 moles H+ 
B)  0.108 moles H+ 
C)  0.186 moles H+ 
D)  0.0539 moles H+ 
E)  0.195 moles H+

Question 12

Starting with solid KCl and water, how many grams of KCl are needed to prepare 3.00 liters of a 2.00 M KCl solution

Accepted Answer

A)  417 g 
B)  427 g 
C)  437 g 
D)  447 g 
E)  None of the above 
A)  417 g 
B)  427 g 
C)  437 g 
D)  447 g 
E)  None of the above

Identify the oxidizing agent in the following chemical reaction. 2MnO₄^- + 5H₂SO₃ $\rarr$ 2Mn²⁺ + 5SO₄^2- + 4H⁺ + 3H₂O

In the following chemical reaction the oxidizing agent is 5H₂O₂ + 2MnO₄^- + 6H⁺ $\rarr$ 2Mn²⁺ + 8H₂O + 5O₂

The highest possible oxidation number of carbon is

What element is reduced in the following chemical reaction Cu + 2H₂SO₄ $\rarr$ CuSO₄ + SO₂ + 2H₂O

Identify the reducing agent in the following chemical reaction. 5Fe²⁺(aq) + MnO₄^-(aq)+ 8H⁺(aq) $\rarr$ 5Fe³⁺(aq) + Mn²⁺(aq) + 4H₂O(l)

Sugar dissolves in water, therefore it is a strong electrolyte.

For the perchlorate ion ClO₄^- , what are the oxidation states of the Cl and O, respectively

What mass of Li₃PO₄ is needed to prepare 500. mL of a solution having a lithium ion concentration of 0.175 M

H₂O is acting as a Brønsted acid in the following reaction. NH₃ + H₂O $\rarr$ NH₄⁺ + OH^-

How many total electrons are transferred in the following reaction 4 P(s) + 5O₂(g) $\rarr$ 2P₂O₅(s)

A 350. mL solution of 0.150 M HNO₃(aq) is mixed with a solution of 230. mL of 0.240 M HCl(aq). How many moles of H⁺(aq) are present in the final solution

Starting with solid KCl and water, how many grams of KCl are needed to prepare 3.00 liters of a 2.00 M KCl solution

Chemistry: The Study of Change

Atoms Molecules and Ions

Mass Relationships in Chemical Reactions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Hybridization of Atomic

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metals Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

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Exam 4: Reactions in Aqueous Solutions

Identify the oxidizing agent in the following chemical reaction. 2MnO4- + 5H2SO3 →\rarr→ 2Mn2+ + 5SO42- + 4H+ + 3H2O

In the following chemical reaction the oxidizing agent is 5H2O2 + 2MnO4- + 6H+ →\rarr→ 2Mn2+ + 8H2O + 5O2

The highest possible oxidation number of carbon is

What element is reduced in the following chemical reaction Cu + 2H2SO4 →\rarr→ CuSO4 + SO2 + 2H2O

Identify the reducing agent in the following chemical reaction. 5Fe2+(aq) + MnO4-(aq)+ 8H+(aq) →\rarr→ 5Fe3+(aq) + Mn2+(aq) + 4H2O(l)

Sugar dissolves in water, therefore it is a strong electrolyte.

For the perchlorate ion ClO4- , what are the oxidation states of the Cl and O, respectively

What mass of Li3PO4 is needed to prepare 500. mL of a solution having a lithium ion concentration of 0.175 M

H2O is acting as a Brønsted acid in the following reaction. NH3 + H2O →\rarr→ NH4+ + OH-

How many total electrons are transferred in the following reaction 4 P(s) + 5O2(g) →\rarr→ 2P2O5(s)

A 350. mL solution of 0.150 M HNO3(aq) is mixed with a solution of 230. mL of 0.240 M HCl(aq). How many moles of H+(aq) are present in the final solution

Starting with solid KCl and water, how many grams of KCl are needed to prepare 3.00 liters of a 2.00 M KCl solution

Chemistry: The Study of Change

Atoms Molecules and Ions

Mass Relationships in Chemical Reactions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Hybridization of Atomic

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metals Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

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Identify the oxidizing agent in the following chemical reaction. 2MnO₄^- + 5H₂SO₃ $\rarr$ 2Mn²⁺ + 5SO₄^2- + 4H⁺ + 3H₂O

In the following chemical reaction the oxidizing agent is 5H₂O₂ + 2MnO₄^- + 6H⁺ $\rarr$ 2Mn²⁺ + 8H₂O + 5O₂

What element is reduced in the following chemical reaction Cu + 2H₂SO₄ $\rarr$ CuSO₄ + SO₂ + 2H₂O

Identify the reducing agent in the following chemical reaction. 5Fe²⁺(aq) + MnO₄^-(aq)+ 8H⁺(aq) $\rarr$ 5Fe³⁺(aq) + Mn²⁺(aq) + 4H₂O(l)

For the perchlorate ion ClO₄^- , what are the oxidation states of the Cl and O, respectively

What mass of Li₃PO₄ is needed to prepare 500. mL of a solution having a lithium ion concentration of 0.175 M

H₂O is acting as a Brønsted acid in the following reaction. NH₃ + H₂O $\rarr$ NH₄⁺ + OH^-

How many total electrons are transferred in the following reaction 4 P(s) + 5O₂(g) $\rarr$ 2P₂O₅(s)

A 350. mL solution of 0.150 M HNO₃(aq) is mixed with a solution of 230. mL of 0.240 M HCl(aq). How many moles of H⁺(aq) are present in the final solution