Question 1

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 2

Balance the redox reaction in acid solution:

Accepted Answer

A)    + O 2- (aq) 
B)    + H2O (l) 
C)    + H2O (l) 
D)    + OH- (aq) 
E) none of the above 
A)    + O 2- (aq) 
B)    + H2O (l) 
C)    + H2O (l) 
D)    + OH- (aq) 
E) none of the above

Question 3

Oxidation involves which of the following? 
1.Loss of electron(s).
2.Gain of electron(s).
3.Increase in oxidation state.

Accepted Answer

A) 1 only 
B) 2 only 
C) 3 only 
D) 1 and 3 only 
E) 2 and 3 only 
A) 1 only 
B) 2 only 
C) 3 only 
D) 1 and 3 only 
E) 2 and 3 only

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

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 6

The oxidation state of Mn in KMnO4 is:

Accepted Answer

A) +1 
B) -1 
C) +5 
D) +7 
E) none of the above 
A) +1 
B) -1 
C) +5 
D) +7 
E) none of the above

Question 7

What must be done to the following half-reactions before they can be added together? 
Mn (s)→ Mn 2+(aq)+ 2e-
Fe 3+ (aq)+ 3 e- → Fe (s)

Accepted Answer

A) Double the Mn half-reaction. 
B) Double the Mn half-reaction and triple the Fe half-reaction. 
C) Triple the Mn half-reaction and double the Fe half-reaction. 
D) Add H+ ions to the left-side of the Mn reaction. 
E) none of the above 
A) Double the Mn half-reaction. 
B) Double the Mn half-reaction and triple the Fe half-reaction. 
C) Triple the Mn half-reaction and double the Fe half-reaction. 
D) Add H+ ions to the left-side of the Mn reaction. 
E) none of the above

Question 8

The driving force that causes electrons to flow through a wire is called current.

Accepted Answer

A) True 
 B)False

Question 9

In which compound does manganese have the highest oxidation state?

Accepted Answer

A) Mn 
B) Mn2O3 
C) KMnO4 
D) MnO2 
E) none of the above 
A) Mn 
B) Mn2O3 
C) KMnO4 
D) MnO2 
E) none of the above

Question 10

Corrosion can be prevented by all of the following EXCEPT:

Accepted Answer

A) painting. 
B) galvanizing. 
C) sacrificial anode. 
D) sacrificial cathode. 
E) none of the above 
A) painting. 
B) galvanizing. 
C) sacrificial anode. 
D) sacrificial cathode. 
E) none of the above

Question 11

Which battery system is completely rechargeable?

Accepted Answer

A) alkaline batteries 
B) fuel cells 
C) lead-acid storage batteries 
D) dry-cell batteries 
E) none of the above 
A) alkaline batteries 
B) fuel cells 
C) lead-acid storage batteries 
D) dry-cell batteries 
E) none of the above

Question 12

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 13

The reducing agent is reduced during the reaction.

Accepted Answer

A) True 
 B)False

Question 14

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 15

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

Accepted Answer

A) True 
 B)False

Question 16

Identify the substance being reduced 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

Corrosion can be defined as the reduction of metals.

Accepted Answer

A) True 
 B)False

Question 18

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

Accepted Answer

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

Question 19

What is the oxidation state of nitrogen in N2O3?

Accepted Answer

A) 0 
B) +1 
C) +2 
D) +3 
E) +6 
A) 0 
B) +1 
C) +2 
D) +3 
E) +6

Question 20

Examine the activity list given below to answer this question: Which element is most easily oxidized,Mg ,Cu,or K ? 
Activity Series =   Cu(s)→   (aq)+ 2 e-

Accepted Answer

A) Mg 
B) Cu 
C) K 
D) all of these elements oxidize equally well 
E) none of these elements can be oxidized 
A) Mg 
B) Cu 
C) K 
D) all of these elements oxidize equally well 
E) none of these elements can be oxidized

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

Balance the redox reaction in acid solution:

Oxidation involves which of the following? 1.Loss of electron(s). 2.Gain of electron(s). 3.Increase in oxidation state.

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

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

The oxidation state of Mn in KMnO₄ is:

What must be done to the following half-reactions before they can be added together? Mn (s)→ Mn ²⁺(aq)+ 2e^- Fe ³⁺ (aq)+ 3 e^- → Fe (s)

The driving force that causes electrons to flow through a wire is called current.

In which compound does manganese have the highest oxidation state?

Corrosion can be prevented by all of the following EXCEPT:

Which battery system is completely rechargeable?

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

The reducing agent is reduced during the reaction.

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

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

Identify the substance being reduced in the following reaction: .

Corrosion can be defined as the reduction of metals.

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

What is the oxidation state of nitrogen in N₂O₃?

Examine the activity list given below to answer this question: Which element is most easily oxidized,Mg ,Cu,or K ? Activity Series = Cu(s)→ (aq)+ 2 e^-

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Exam 16: Oxidation and Reduction

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

Balance the redox reaction in acid solution:

Oxidation involves which of the following? 1.Loss of electron(s). 2.Gain of electron(s). 3.Increase in oxidation state.

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

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

The oxidation state of Mn in KMnO4 is:

What must be done to the following half-reactions before they can be added together? Mn (s)→ Mn 2+(aq)+ 2e- Fe 3+ (aq)+ 3 e- → Fe (s)

The driving force that causes electrons to flow through a wire is called current.

In which compound does manganese have the highest oxidation state?

Corrosion can be prevented by all of the following EXCEPT:

Which battery system is completely rechargeable?

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

The reducing agent is reduced during the reaction.

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

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

Identify the substance being reduced in the following reaction: .

Corrosion can be defined as the reduction of metals.

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

What is the oxidation state of nitrogen in N2O3?

Examine the activity list given below to answer this question: Which element is most easily oxidized,Mg ,Cu,or K ? Activity Series = Cu(s)→ (aq)+ 2 e-

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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The oxidation state of Mn in KMnO₄ is:

What must be done to the following half-reactions before they can be added together? Mn (s)→ Mn ²⁺(aq)+ 2e^- Fe ³⁺ (aq)+ 3 e^- → Fe (s)

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

What is the oxidation state of nitrogen in N₂O₃?

Examine the activity list given below to answer this question: Which element is most easily oxidized,Mg ,Cu,or K ? Activity Series = Cu(s)→ (aq)+ 2 e^-