Question 1

For the reaction KMnO4 + Li → LiMnO4 + K,which atom is being reduced?

Accepted Answer

A) Li 
B) Mn 
C) O 
D) K 
E) none of the above 
A) Li 
B) Mn 
C) O 
D) K 
E) none of the above

Question 2

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 3

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

Accepted Answer

A) The anode is the electrode where oxidation occurs. 
B) A salt bridge provides electrical contact between the half-cells. 
C) The cathode is the electrode where reduction occurs. 
D) A spontaneous electrochemical cell is called a galvanic cell. 
E) All of the above are true. 
A) The anode is the electrode where oxidation occurs. 
B) A salt bridge provides electrical contact between the half-cells. 
C) The cathode is the electrode where reduction occurs. 
D) A spontaneous electrochemical cell is called a galvanic cell. 
E) All of the above are true.

Question 4

Corrosion can be defined as the reduction of metals.

Accepted Answer

A) True 
 B)False

Question 5

From the activity list included in this problem,which element will displace  
Ions from solution?
Activity Series =

Accepted Answer

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

Question 6

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

Accepted Answer

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

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

Reactions involving the transfer of electrons are called redox reactions.

Accepted Answer

A) True 
 B)False

Question 9

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 10

From the activity list included in this problem,which element/ion is the easiest to reduce?
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 11

The oxidation number of P in PO4 3- is:

Accepted Answer

A) -3 
B) -5 
C) +5 
D) +8 
E) none of the above 
A) -3 
B) -5 
C) +5 
D) +8 
E) none of the above

Question 12

A sacrificial electrode works by being reduced which prevents the metal from being oxidized.

Accepted Answer

A) True 
 B)False

Question 13

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 14

To achieve the largest battery voltage possible,the battery should be assembled from a metal high on the activity series list with a metal ion low on the activity series list.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following are typically TRUE of an oxidizing agent?
1.It causes oxidation.
2.It gains electron(s).
3.It is the reduced 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 16

Cars are being developed that run on hydrogen gas and the only emission is water.

Accepted Answer

A) True 
 B)False

Question 17

Alkaline batteries are used in automobiles.

Accepted Answer

A) True 
 B)False

Question 18

Distinguish between a galvanic (voltaic)cell and an electrolytic cell.

Accepted Answer

In a galvanic (voltaic)cell,an electric

Question 19

An electrolytic cell is a spontaneous redox reaction.

Accepted Answer

A) True 
 B)False

Question 20

An electrochemical cell is based on the coupling of a spontaneous redox reaction.

Accepted Answer

A) True 
 B)False

For the reaction KMnO₄ + Li → LiMnO₄ + K,which atom is being reduced?

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

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

Corrosion can be defined as the reduction of metals.

From the activity list included in this problem,which element will displace Ions from solution? Activity Series =

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

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

Reactions involving the transfer of electrons are called redox reactions.

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

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

The oxidation number of P in PO₄^3- is:

A sacrificial electrode works by being reduced which prevents the metal from being oxidized.

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

To achieve the largest battery voltage possible,the battery should be assembled from a metal high on the activity series list with a metal ion low on the activity series list.

Which of the following are typically TRUE of an oxidizing agent? 1.It causes oxidation. 2.It gains electron(s). 3.It is the reduced substance.

Cars are being developed that run on hydrogen gas and the only emission is water.

Alkaline batteries are used in automobiles.

Distinguish between a galvanic (voltaic)cell and an electrolytic cell.

An electrolytic cell is a spontaneous redox reaction.

An electrochemical cell is based on the coupling of a spontaneous redox reaction.

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Electrons in Atoms and the Periodic Table

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Exam 16: Oxidation and Reduction

For the reaction KMnO4 + Li → LiMnO4 + K,which atom is being reduced?

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

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

Corrosion can be defined as the reduction of metals.

From the activity list included in this problem,which element will displace Ions from solution? Activity Series =

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

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

Reactions involving the transfer of electrons are called redox reactions.

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

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

The oxidation number of P in PO4 3- is:

A sacrificial electrode works by being reduced which prevents the metal from being oxidized.

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

To achieve the largest battery voltage possible,the battery should be assembled from a metal high on the activity series list with a metal ion low on the activity series list.

Which of the following are typically TRUE of an oxidizing agent? 1.It causes oxidation. 2.It gains electron(s). 3.It is the reduced substance.

Cars are being developed that run on hydrogen gas and the only emission is water.

Alkaline batteries are used in automobiles.

Distinguish between a galvanic (voltaic)cell and an electrolytic cell.

An electrolytic cell is a spontaneous redox reaction.

An electrochemical cell is based on the coupling of a spontaneous redox reaction.

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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For the reaction KMnO₄ + Li → LiMnO₄ + K,which atom is being reduced?

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 number of P in PO₄^3- is: