Question 1

(aq)+ 2Na (s)→ Ca (s)+   
(aq)is a spontaneous reaction.
Activity Series =

Accepted Answer

A) True 
 B)False  False

Question 2

The oxidation number of a chlorine atom is -1.

Accepted Answer

A) True 
 B)False  False

Question 3

Using the activity list included in this problem,which element/ion is the most resistant to oxidation?
Activity Series =

Accepted Answer

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

Question 4

A galvanic cell is a spontaneous electrochemical cell.

Accepted Answer

A) True 
 B)False

Question 5

Identify the substance being reduced in the following reaction:  
.

Accepted Answer

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

Question 6

If you properly balance the following half reaction in base solution,how many electrons would appear on the product side of the equation? Al (s)→ Al(OH)41- (aq)

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
E) none of the above 
A) 2 
B) 3 
C) 4 
D) 5 
E) none of the above

Question 7

Balance the following half reaction in acid solution:  
(aq)

Accepted Answer

A)   
→
  
+ 3
   
B)   
+ 8
  
→
  
+ 4
  
O 
C)   
+ 8
  
→
  
+ 4
  
O +5
   
D)   
+ 8
  
+ 5
  
→
  
+ 4
  
O 
E) none of the above 
A)   
→
  
+ 3
   
B)   
+ 8
  
→
  
+ 4
  
O 
C)   
+ 8
  
→
  
+ 4
  
O +5
   
D)   
+ 8
  
+ 5
  
→
  
+ 4
  
O 
E) none of the above

Question 8

Rusting of iron requires the presence of both oxygen and water.

Accepted Answer

A) True 
 B)False

Question 9

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 10

A spontaneous redox reaction can be used to produce electrical current.

Accepted Answer

A) True 
 B)False

Question 11

Which fact about fuel cells is FALSE?

Accepted Answer

A) Fuel cell automobiles are powered by water and the only emission is hydrogen. 
B) Fuel cells are based on the tendency of some elements to gain electrons from other elements. 
C) Fuel cell automobiles are whisper quiet. 
D) Fuel cell automobiles are environmentally friendly. 
E) all of the above 
A) Fuel cell automobiles are powered by water and the only emission is hydrogen. 
B) Fuel cells are based on the tendency of some elements to gain electrons from other elements. 
C) Fuel cell automobiles are whisper quiet. 
D) Fuel cell automobiles are environmentally friendly. 
E) all of the above

Question 12

Which of the following are typically TRUE of a reducing agent?
1.It causes reduction.
2.It gains electron(s).
3.It is the oxidized substance.

Accepted Answer

A) 1 and 2 only 
B) 1 and 3 only 
C) 2 and 3 only 
D) All of 1,2,and 3 
E) Neither 1,2 or 3 
A) 1 and 2 only 
B) 1 and 3 only 
C) 2 and 3 only 
D) All of 1,2,and 3 
E) Neither 1,2 or 3

Question 13

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 14

In electrolysis:

Accepted Answer

A) a spontaneous redox reaction produces electricity. 
B) a nonspontaneous redox reaction is forced to occur by applying an electric current. 
C) only pure,drinkable water is produced. 
D) you have a cell which reverses the flow of ions. 
E) none of the above 
A) a spontaneous redox reaction produces electricity. 
B) a nonspontaneous redox reaction is forced to occur by applying an electric current. 
C) only pure,drinkable water is produced. 
D) you have a cell which reverses the flow of ions. 
E) none of the above

Question 15

From the activity list included in this problem,which element/ion is the most difficult to reduce?
Activity Series =

Accepted Answer

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

Question 16

In the following reaction,
Zn (s)+ CuSO4 (aq)→ ZnSO4 (aq)+ Cu (s):

Accepted Answer

A) Zn is the reducing agent and CuSO4 is the oxidizing agent. 
B) CuSO4 is the reducing agent and Zn is the oxidizing agent. 
C) ZnSO4 is the reducing agent and Cu is the oxidizing agent. 
D)   
Is the reducing agent and Zn2+ is the oxidizing agent. 
E) none of the above 
A) Zn is the reducing agent and CuSO4 is the oxidizing agent. 
B) CuSO4 is the reducing agent and Zn is the oxidizing agent. 
C) ZnSO4 is the reducing agent and Cu is the oxidizing agent. 
D)   
Is the reducing agent and Zn2+ is the oxidizing agent. 
E) none of the above

Question 17

It can be shown that copper metal lies below H2 on the activity series of metals.This means that copper will dissolve in hydrochloric acid.

Accepted Answer

A) True 
 B)False

Question 18

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

Accepted Answer

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

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

Electrons flowing through a wire is an example of electrical current.

Accepted Answer

A) True 
 B)False

(aq)+ 2Na (s)→ Ca (s)+ (aq)is a spontaneous reaction. Activity Series =

The oxidation number of a chlorine atom is -1.

Using the activity list included in this problem,which element/ion is the most resistant to oxidation? Activity Series =

A galvanic cell is a spontaneous electrochemical cell.

Identify the substance being reduced in the following reaction: .

If you properly balance the following half reaction in base solution,how many electrons would appear on the product side of the equation? Al (s)→ Al(OH)₄^1- (aq)

Balance the following half reaction in acid solution: (aq)

Rusting of iron requires the presence of both oxygen and water.

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

A spontaneous redox reaction can be used to produce electrical current.

Which fact about fuel cells is FALSE?

Which of the following are typically TRUE of a reducing agent? 1.It causes reduction. 2.It gains electron(s). 3.It is the oxidized substance.

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

In electrolysis:

From the activity list included in this problem,which element/ion is the most difficult to reduce? Activity Series =

In the following reaction, Zn (s)+ CuSO₄ (aq)→ ZnSO₄(aq)+ Cu (s):

It can be shown that copper metal lies below H₂ on the activity series of metals.This means that copper will dissolve in hydrochloric acid.

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

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

Electrons flowing through a wire is an example of electrical current.

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Liquids,solids,and Intermolecular Forces

Solutions

Acids and Bases

Chemical Equilibrium

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

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Exam 16: Oxidation and Reduction

(aq)+ 2Na (s)→ Ca (s)+ (aq)is a spontaneous reaction. Activity Series =

The oxidation number of a chlorine atom is -1.

Using the activity list included in this problem,which element/ion is the most resistant to oxidation? Activity Series =

A galvanic cell is a spontaneous electrochemical cell.

Identify the substance being reduced in the following reaction: .

If you properly balance the following half reaction in base solution,how many electrons would appear on the product side of the equation? Al (s)→ Al(OH)41- (aq)

Balance the following half reaction in acid solution: (aq)

Rusting of iron requires the presence of both oxygen and water.

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

A spontaneous redox reaction can be used to produce electrical current.

Which fact about fuel cells is FALSE?

Which of the following are typically TRUE of a reducing agent? 1.It causes reduction. 2.It gains electron(s). 3.It is the oxidized substance.

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

In electrolysis:

From the activity list included in this problem,which element/ion is the most difficult to reduce? Activity Series =

In the following reaction, Zn (s)+ CuSO4 (aq)→ ZnSO4 (aq)+ Cu (s):

It can be shown that copper metal lies below H2 on the activity series of metals.This means that copper will dissolve in hydrochloric acid.

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

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

Electrons flowing through a wire is an example of electrical current.

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Liquids,solids,and Intermolecular Forces

Solutions

Acids and Bases

Chemical Equilibrium

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

If you properly balance the following half reaction in base solution,how many electrons would appear on the product side of the equation? Al (s)→ Al(OH)₄^1- (aq)

In the following reaction, Zn (s)+ CuSO₄ (aq)→ ZnSO₄(aq)+ Cu (s):

It can be shown that copper metal lies below H₂ on the activity series of metals.This means that copper will dissolve in hydrochloric acid.