Question 1

The oxidizing agent typically:

Accepted Answer

A) loses electrons. 
B) gains oxygen. 
C) is the reactant that is reduced. 
D) is oxidized. 
E) none of the above 
A) loses electrons. 
B) gains oxygen. 
C) is the reactant that is reduced. 
D) is oxidized. 
E) none of the above

Question 2

The oxidation number of manganese in MnO41- is +7.

Accepted Answer

A) True 
 B)False

Question 3

Electrolysis is used to recover many metals from their oxide ores.

Accepted Answer

A) True 
 B)False

Question 4

What is the oxidation state of the underlined atom in the compound: C  
?

Accepted Answer

A) +1 
B) +2 
C) -2 
D) +4 
E) +6 
A) +1 
B) +2 
C) -2 
D) +4 
E) +6

Question 5

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 6

The reducing agent typically:

Accepted Answer

A) gains electrons. 
B) always remains unchanged during a reaction. 
C) is the oxidized substance. 
D) is itself reduced. 
E) none of the above 
A) gains electrons. 
B) always remains unchanged during a reaction. 
C) is the oxidized substance. 
D) is itself reduced. 
E) none of the above

Question 7

The oxidizing agent is the substance being reduced.

Accepted Answer

A) True 
 B)False

Question 8

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

Question 9

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 10

The reducing agent is reduced during the reaction.

Accepted Answer

A) True 
 B)False

Question 11

What is the oxidation state of the underlined atom in the compound:  
S  
?

Accepted Answer

A) +1 
B) +2 
C) -2 
D) +6 
E) +4 
A) +1 
B) +2 
C) -2 
D) +6 
E) +4

Question 12

What is the oxidation state of the underlined atom in the compound:  
S  
?

Accepted Answer

A) +1 
B) +2 
C) -2 
D) +6 
E) +4 
A) +1 
B) +2 
C) -2 
D) +6 
E) +4

Question 13

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

Accepted Answer

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

Question 14

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 15

The oxidation state of Na in Na2SO4 is:

Accepted Answer

A) +1 
B) +2 
C) +4 
D) -1 
E) none of the above 
A) +1 
B) +2 
C) +4 
D) -1 
E) none of the above

Question 16

Oxidation occurs at the cathode.

Accepted Answer

A) True 
 B)False

Question 17

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 18

The reaction 2 NO2 → N2O4 would not be considered a redox reaction.

Accepted Answer

A) True 
 B)False

Question 19

Flashlight batteries are called dry cells.

Accepted Answer

A) True 
 B)False

Question 20

Redox reactions must involve the gain or loss of oxygen atoms.

Accepted Answer

A) True 
 B)False

The oxidizing agent typically:

The oxidation number of manganese in MnO₄^1- is +7.

Electrolysis is used to recover many metals from their oxide ores.

What is the oxidation state of the underlined atom in the compound: C ?

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

The reducing agent typically:

The oxidizing agent is the substance being reduced.

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

Which battery system is completely rechargeable?

The reducing agent is reduced during the reaction.

What is the oxidation state of the underlined atom in the compound: S ?

What is the oxidation state of the underlined atom in the compound: S ?

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

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

The oxidation state of Na in Na₂SO₄ is:

Oxidation occurs at the cathode.

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

The reaction 2 NO₂ → N₂O₄ would not be considered a redox reaction.

Flashlight batteries are called dry cells.

Redox reactions must involve the gain or loss of oxygen atoms.

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

Exam 16: Oxidation and Reduction

The oxidizing agent typically:

The oxidation number of manganese in MnO41- is +7.

Electrolysis is used to recover many metals from their oxide ores.

What is the oxidation state of the underlined atom in the compound: C ?

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

The reducing agent typically:

The oxidizing agent is the substance being reduced.

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

Which battery system is completely rechargeable?

The reducing agent is reduced during the reaction.

What is the oxidation state of the underlined atom in the compound: S ?

What is the oxidation state of the underlined atom in the compound: S ?

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

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

The oxidation state of Na in Na2SO4 is:

Oxidation occurs at the cathode.

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

The reaction 2 NO2 → N2O4 would not be considered a redox reaction.

Flashlight batteries are called dry cells.

Redox reactions must involve the gain or loss of oxygen atoms.

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

The oxidation number of manganese in MnO₄^1- is +7.

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

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

The oxidation state of Na in Na₂SO₄ is:

The reaction 2 NO₂ → N₂O₄ would not be considered a redox reaction.