Question 1

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 2

From the activity list included in this problem,which element below would serve as a sacrificial electrode for iron?
Activity Series =

Accepted Answer

A) Zn 
B) Fe 
C) Ni 
D) all of these 
E) none of these 
A) Zn 
B) Fe 
C) Ni 
D) all of these 
E) none of these

Question 3

The rusting of iron is an example of the process known as corrosion.

Accepted Answer

A) True 
 B)False

Question 4

Identify the substance being oxidized 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 5

Oxidation is the loss of electrons.

Accepted Answer

A) True 
 B)False

Question 6

Assign the oxidation state of each atom in potassium chlorate,KClO3.

Accepted Answer

A) K = +1,Cl = +1,O = -2 
B) K = -1,Cl = -1,O = +2 
C) K = +1,Cl = +5,O = -2 
D) K = +1,Cl = -1,O = 0 
E) K = -1,Cl = +1,O = 0 
A) K = +1,Cl = +1,O = -2 
B) K = -1,Cl = -1,O = +2 
C) K = +1,Cl = +5,O = -2 
D) K = +1,Cl = -1,O = 0 
E) K = -1,Cl = +1,O = 0

Question 7

In an electrochemical cell,which of the following statements is FALSE?

Accepted Answer

A) Oxidation occurs at the anode. 
B) Reduction occurs at the cathode. 
C) Electrons flow through the salt bridge to complete the cell. 
D) A spontaneous electrochemical cell is called a voltaic cell. 
E) All of the above are true. 
A) Oxidation occurs at the anode. 
B) Reduction occurs at the cathode. 
C) Electrons flow through the salt bridge to complete the cell. 
D) A spontaneous electrochemical cell is called a voltaic cell. 
E) All of the above are true.

Question 8

Reduction typically involves:

Accepted Answer

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

Question 9

In the reaction S + O2 → SO2 ,the O2 is being oxidized.

Accepted Answer

A) True 
 B)False

Question 10

Given that the Activity Series shown below is accurate,then Li(s)+   
(aq)→   
(aq)+ K(s)is a spontaneous reaction.
Activity Series =

Accepted Answer

A) True 
 B)False

Question 11

In the following reaction,
Mg (s)+  
(aq)→  
(aq)+ Cu (s):

Accepted Answer

A) Mg is the reducing agent and Cu is the oxidizing agent. 
B)   
Is the reducing agent and Cu is the oxidizing agent. 
C) Cu is the reducing agent and  
Is the oxidizing agent. 
D)   
Is the reducing agent and Mg is the oxidizing agent. 
E) Mg is the reducing agent and  
Is the oxidizing agent. 
A) Mg is the reducing agent and Cu is the oxidizing agent. 
B)   
Is the reducing agent and Cu is the oxidizing agent. 
C) Cu is the reducing agent and  
Is the oxidizing agent. 
D)   
Is the reducing agent and Mg is the oxidizing agent. 
E) Mg is the reducing agent and  
Is the oxidizing agent.

Question 12

Oxidation can be defined as the gain of oxygen atoms by another element.

Accepted Answer

A) True 
 B)False

Question 13

The oxidation number of Cr in Cr2O7 2- is:

Accepted Answer

A) +2. 
B) -2. 
C) +7. 
D) +6. 
E) none of the above 
A) +2. 
B) -2. 
C) +7. 
D) +6. 
E) none of the above

Question 14

Identify the reducing agent 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 15

What is the balanced reduction half-reaction for the following unbalanced redox reaction:

Accepted Answer

A) Ca →  
+ 2
   
B)   
→ Ag + 1
   
C) 2  
+ Ca →
   
D)   
+ 2
  
→ 2Ag 
E) none of the above 
A) Ca →  
+ 2
   
B)   
→ Ag + 1
   
C) 2  
+ Ca →
   
D)   
+ 2
  
→ 2Ag 
E) none of the above

Question 16

What is the balanced oxidation half-reaction for the following unbalanced redox reaction:

Accepted Answer

A) Ca →  
+ 2
   
B)   
→ Ag +
   
C) 2  
+ Ca →
   
D)   
+ 2
  
→ 2Ag 
E) none of the above 
A) Ca →  
+ 2
   
B)   
→ Ag +
   
C) 2  
+ Ca →
   
D)   
+ 2
  
→ 2Ag 
E) none of the above

Question 17

The oxidation number of sodium in NaI is +1.

Accepted Answer

A) True 
 B)False

Question 18

The cathode is the electrode at which reduction occurs.

Accepted Answer

A) True 
 B)False

Question 19

Suggest two methods to reduce corrosion of a metal such as iron and briefly explain how each method works.

Accepted Answer

1.Galvanizing: This is a process in whic

Question 20

Reduction can be defined as the gain of oxygen atoms by another element.

Accepted Answer

A) True 
 B)False

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

From the activity list included in this problem,which element below would serve as a sacrificial electrode for iron? Activity Series =

The rusting of iron is an example of the process known as corrosion.

Identify the substance being oxidized in the following reaction: .

Oxidation is the loss of electrons.

Assign the oxidation state of each atom in potassium chlorate,KClO₃.

In an electrochemical cell,which of the following statements is FALSE?

Reduction typically involves:

In the reaction S + O₂→ SO₂ ,the O₂ is being oxidized.

Given that the Activity Series shown below is accurate,then Li(s)+ (aq)→ (aq)+ K(s)is a spontaneous reaction. Activity Series =

In the following reaction, Mg (s)+ (aq)→ (aq)+ Cu (s):

Oxidation can be defined as the gain of oxygen atoms by another element.

The oxidation number of Cr in Cr₂O₇ ^2-is:

Identify the reducing agent in the following reaction: .

What is the balanced reduction half-reaction for the following unbalanced redox reaction:

What is the balanced oxidation half-reaction for the following unbalanced redox reaction:

The oxidation number of sodium in NaI is +1.

The cathode is the electrode at which reduction occurs.

Suggest two methods to reduce corrosion of a metal such as iron and briefly explain how each method works.

Reduction can be defined as the gain of oxygen atoms by another element.

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Exam 16: Oxidation and Reduction

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

From the activity list included in this problem,which element below would serve as a sacrificial electrode for iron? Activity Series =

The rusting of iron is an example of the process known as corrosion.

Identify the substance being oxidized in the following reaction: .

Oxidation is the loss of electrons.

Assign the oxidation state of each atom in potassium chlorate,KClO3.

In an electrochemical cell,which of the following statements is FALSE?

Reduction typically involves:

In the reaction S + O2 → SO2 ,the O2 is being oxidized.

Given that the Activity Series shown below is accurate,then Li(s)+ (aq)→ (aq)+ K(s)is a spontaneous reaction. Activity Series =

In the following reaction, Mg (s)+ (aq)→ (aq)+ Cu (s):

Oxidation can be defined as the gain of oxygen atoms by another element.

The oxidation number of Cr in Cr2O7 2- is:

Identify the reducing agent in the following reaction: .

What is the balanced reduction half-reaction for the following unbalanced redox reaction:

What is the balanced oxidation half-reaction for the following unbalanced redox reaction:

The oxidation number of sodium in NaI is +1.

The cathode is the electrode at which reduction occurs.

Suggest two methods to reduce corrosion of a metal such as iron and briefly explain how each method works.

Reduction can be defined as the gain of oxygen atoms by another element.

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

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Assign the oxidation state of each atom in potassium chlorate,KClO₃.

In the reaction S + O₂→ SO₂ ,the O₂ is being oxidized.

The oxidation number of Cr in Cr₂O₇ ^2-is: