Question 1

What is the oxidation state of the underlined atom in the reaction:

Accepted Answer

A) 0 
B) +1 
C) -1 
D) +2 
E) -2 
A) 0 
B) +1 
C) -1 
D) +2 
E) -2

Question 2

Balance the following half reaction in base solution: H2O (l)→ H2 (g)

Accepted Answer

A) 2H2O (l)+ 2 e- → H2 (g)+ 2 OH- (aq) 
B) 2H2O (l)→ 2H2 (g)+ 2 e- + O2 
C) 2H2O (l)→ H2 (g)+ 2 H+ + 2e- 
D) H2O (l)→ 2H+ + 2OH- 
E) 2H2O (l)→ H2 (g)+ 2OH- (aq)+ 5 e- 
A) 2H2O (l)+ 2 e- → H2 (g)+ 2 OH- (aq) 
B) 2H2O (l)→ 2H2 (g)+ 2 e- + O2 
C) 2H2O (l)→ H2 (g)+ 2 H+ + 2e- 
D) H2O (l)→ 2H+ + 2OH- 
E) 2H2O (l)→ H2 (g)+ 2OH- (aq)+ 5 e-

Question 3

Oxidation typically involves:

Accepted Answer

A) the loss of electrons. 
B) the loss of oxygen. 
C) the gain of electrons. 
D) the gain of water. 
E) none of the above 
A) the loss of electrons. 
B) the loss of oxygen. 
C) the gain of electrons. 
D) the gain of water. 
E) none of the above

Question 4

Identify the oxidizing agent in the following reaction: 
  .

Accepted Answer

A) CH4 
B) O2 
C) CO2 
D) H2O 
E) none of the above 
A) CH4 
B) O2 
C) CO2 
D) H2O 
E) none of the above

Question 5

Using the activity list included in this problem,which element/ion listed below is the most easily oxidized? 
Activity Series =

Accepted Answer

A)    
B) Pb 
C)    
D)    
E) none of the above 
A)    
B) Pb 
C)    
D)    
E) none of the above

Question 6

The half-reaction 2 Br 1- → Br2 + 2 e- is balanced with respect to mass but it is not balanced with respect to charge.

Accepted Answer

A) True 
 B)False

Question 7

The oxidation state of Na in Na2SO4 is:

Accepted Answer

A) +1 
B) +2 
C) +4 
D) -1 
E) none of the above 
A) +1 
B) +2 
C) +4 
D) -1 
E) none of the above

Question 8

Oxidation and reduction cannot both occur in the same chemical reaction.

Accepted Answer

A) True 
 B)False

Question 9

Electrical current can be used to drive a nonspontaneous redox reaction.

Accepted Answer

A) True 
 B)False

Question 10

From the activity list included in this problem,which element/ion will spontaneously react with Ca? 
Activity Series =

Accepted Answer

A) Na 
B)    
C)    
D) Li 
E)    
A) Na 
B)    
C)    
D) Li 
E)

Question 11

The reducing agent typically:

Accepted Answer

A) gains electrons. 
B) always remains unchanged during a reaction. 
C) is the oxidized substance. 
D) is itself reduced. 
E) none of the above 
A) gains electrons. 
B) always remains unchanged during a reaction. 
C) is the oxidized substance. 
D) is itself reduced. 
E) none of the above

Question 12

Reactions involving the transfer of electrons are called redox reactions.

Accepted Answer

A) True 
 B)False

Question 13

Corrosion is the:

Accepted Answer

A) oxidation of nonmetals. 
B) loss of electrons. 
C) oxidation of metals. 
D) formation of an insoluble hydroxide. 
E) none of the above 
A) oxidation of nonmetals. 
B) loss of electrons. 
C) oxidation of metals. 
D) formation of an insoluble hydroxide. 
E) none of the above

Question 14

A galvanic cell is a spontaneous electrochemical cell.

Accepted Answer

A) True 
 B)False

Question 15

What is the oxidation state of the underlined atom in the reaction:

Accepted Answer

A) 0 
B) +1 
C) -1 
D) +2 
E) -2 
A) 0 
B) +1 
C) -1 
D) +2 
E) -2

Question 16

Identify the reducing agent in the following reaction: 
  .

Accepted Answer

A) CH4 
B) O2 
C) CO2 
D) H2O 
E) none of the above 
A) CH4 
B) O2 
C) CO2 
D) H2O 
E) none of the above

Question 17

Oxidation is the loss of electrons.

Accepted Answer

A) True 
 B)False

Question 18

Which substance below would contain a nitrogen atom with the highest oxidation number of all those shown?

Accepted Answer

A) NH4 1+ 
B) N2 
C) NO2 
D) NO3 1- 
E) NH3 
A) NH4 1+ 
B) N2 
C) NO2 
D) NO3 1- 
E) NH3

Question 19

How many electrons are exchanged when the following reaction is balanced? 
Zn (s)+ Ni 3+ (aq)→ Zn 2+ (aq)+ Ni (s)

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 6 
E) none of the above 
A) 1 
B) 2 
C) 3 
D) 6 
E) none of the above

Question 20

Balance the redox reaction in acid solution:   (l)

Accepted Answer

A) 4   +     2- + 7   → 2   + 2   + 7   O 
B) 6   +     2- + 14   → 2   + 3   + 7   O 
C) 2   +     2- + 14   → 2   +   + 7   O 
D) 2   + 2     2- + 14   → 4   +   + 14   O 
E) none of the above 
A) 4   +     2- + 7   → 2   + 2   + 7   O 
B) 6   +     2- + 14   → 2   + 3   + 7   O 
C) 2   +     2- + 14   → 2   +   + 7   O 
D) 2   + 2     2- + 14   → 4   +   + 14   O 
E) none of the above

What is the oxidation state of the underlined atom in the reaction:

Balance the following half reaction in base solution: H₂O (l)→ H₂ (g)

Oxidation typically involves:

Identify the oxidizing agent in the following reaction: .

Using the activity list included in this problem,which element/ion listed below is the most easily oxidized? Activity Series =

The half-reaction 2 Br ^1- → Br₂ + 2 e^- is balanced with respect to mass but it is not balanced with respect to charge.

The oxidation state of Na in Na₂SO₄ is:

Oxidation and reduction cannot both occur in the same chemical reaction.

Electrical current can be used to drive a nonspontaneous redox reaction.

From the activity list included in this problem,which element/ion will spontaneously react with Ca? Activity Series =

The reducing agent typically:

Reactions involving the transfer of electrons are called redox reactions.

Corrosion is the:

A galvanic cell is a spontaneous electrochemical cell.

What is the oxidation state of the underlined atom in the reaction:

Identify the reducing agent in the following reaction: .

Oxidation is the loss of electrons.

Which substance below would contain a nitrogen atom with the highest oxidation number of all those shown?

How many electrons are exchanged when the following reaction is balanced? Zn (s)+ Ni ³⁺ (aq)→ Zn ²⁺ (aq)+ Ni (s)

Balance the redox reaction in acid solution: (l)

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Exam 16: Oxidation and Reduction

What is the oxidation state of the underlined atom in the reaction:

Balance the following half reaction in base solution: H2O (l)→ H2 (g)

Oxidation typically involves:

Identify the oxidizing agent in the following reaction: .

Using the activity list included in this problem,which element/ion listed below is the most easily oxidized? Activity Series =

The half-reaction 2 Br 1- → Br2 + 2 e- is balanced with respect to mass but it is not balanced with respect to charge.

The oxidation state of Na in Na2SO4 is:

Oxidation and reduction cannot both occur in the same chemical reaction.

Electrical current can be used to drive a nonspontaneous redox reaction.

From the activity list included in this problem,which element/ion will spontaneously react with Ca? Activity Series =

The reducing agent typically:

Reactions involving the transfer of electrons are called redox reactions.

Corrosion is the:

A galvanic cell is a spontaneous electrochemical cell.

What is the oxidation state of the underlined atom in the reaction:

Identify the reducing agent in the following reaction: .

Oxidation is the loss of electrons.

Which substance below would contain a nitrogen atom with the highest oxidation number of all those shown?

How many electrons are exchanged when the following reaction is balanced? Zn (s)+ Ni 3+ (aq)→ Zn 2+ (aq)+ Ni (s)

Balance the redox reaction in acid solution: (l)

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Atoms and Elements

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

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Liquids, solids, and Intermolecular Forces

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Balance the following half reaction in base solution: H₂O (l)→ H₂ (g)

The half-reaction 2 Br ^1- → Br₂ + 2 e^- is balanced with respect to mass but it is not balanced with respect to charge.

The oxidation state of Na in Na₂SO₄ is:

How many electrons are exchanged when the following reaction is balanced? Zn (s)+ Ni ³⁺ (aq)→ Zn ²⁺ (aq)+ Ni (s)