Question 1

Alkaline batteries are used in automobiles.

Accepted Answer

A) True 
 B)False  False

Question 2

Oxidation occurs at the cathode.

Accepted Answer

A) True 
 B)False  False

Question 3

The oxidation number of a chlorine atom is -1.

Accepted Answer

A) True 
 B)False  False

Question 4

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 5

Fuel cells are based on the tendency of some elements to gain electrons from gasoline.

Accepted Answer

A) True 
 B)False

Question 6

The substance being reduced is the oxidizing agent while the substance being oxidized is the reducing agent.

Accepted Answer

A) True 
 B)False

Question 7

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 8

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

Accepted Answer

A) True 
 B)False

Question 9

Reduction is the gain of electrons.

Accepted Answer

A) True 
 B)False

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

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 12

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

Accepted Answer

A) True 
 B)False

Question 13

The oxidizing agent is the substance being reduced.

Accepted Answer

A) True 
 B)False

Question 14

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 15

Flashlight batteries are called dry cells.

Accepted Answer

A) True 
 B)False

Question 16

For the reaction Co + Cl2 → CoCl2 ,which statement is TRUE?

Accepted Answer

A) The cobalt is oxidized because its oxidation state changed from 0 to +2. 
B) The cobalt is oxidized because it gained two electrons. 
C) The oxidation state of each chlorine atom in Cl2 is -1. 
D) Each chlorine atom is oxidized. 
E) none of the above 
A) The cobalt is oxidized because its oxidation state changed from 0 to +2. 
B) The cobalt is oxidized because it gained two electrons. 
C) The oxidation state of each chlorine atom in Cl2 is -1. 
D) Each chlorine atom is oxidized. 
E) none of the above

Question 17

The cathode is the electrode at which reduction occurs.

Accepted Answer

A) True 
 B)False

Question 18

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 19

Identify the substance being oxidized 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 20

For the reaction Si (s)+ O2 (g)→ SiO2 (g),the reducing agent is:

Accepted Answer

A) Si. 
B) O2. 
C) SiO2. 
D) O. 
E) none of the above 
A) Si. 
B) O2. 
C) SiO2. 
D) O. 
E) none of the above

Alkaline batteries are used in automobiles.

Oxidation occurs at the cathode.

The oxidation number of a chlorine atom is -1.

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)

Fuel cells are based on the tendency of some elements to gain electrons from gasoline.

The substance being reduced is the oxidizing agent while the substance being oxidized is the reducing agent.

In electrolysis:

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

Reduction is the gain of electrons.

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

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

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

The oxidizing agent is the substance being reduced.

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

Flashlight batteries are called dry cells.

For the reaction Co + Cl₂ → CoCl₂ ,which statement is TRUE?

The cathode is the electrode at which reduction occurs.

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.

Identify the substance being oxidized in the following reaction: .

For the reaction Si (s)+ O₂(g)→ SiO₂ (g),the reducing agent is:

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Electrons in Atoms and the Periodic Table

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Exam 16: Oxidation and Reduction

Alkaline batteries are used in automobiles.

Oxidation occurs at the cathode.

The oxidation number of a chlorine atom is -1.

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)

Fuel cells are based on the tendency of some elements to gain electrons from gasoline.

The substance being reduced is the oxidizing agent while the substance being oxidized is the reducing agent.

In electrolysis:

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

Reduction is the gain of electrons.

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

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

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

The oxidizing agent is the substance being reduced.

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

Flashlight batteries are called dry cells.

For the reaction Co + Cl2 → CoCl2 ,which statement is TRUE?

The cathode is the electrode at which reduction occurs.

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.

Identify the substance being oxidized in the following reaction: .

For the reaction Si (s)+ O2 (g)→ SiO2 (g),the reducing agent is:

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)

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

For the reaction Co + Cl₂ → CoCl₂ ,which statement is TRUE?

For the reaction Si (s)+ O₂(g)→ SiO₂ (g),the reducing agent is: