Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

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

Accepted Answer

A) True 
 B)False

Question 3

If you properly balance the following half reaction in acid solution,how many electrons would appear on the product side of the equation? 
NO (g)→ NO31- (aq)

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 5 
E) none of the above 
A) 1 
B) 2 
C) 3 
D) 5 
E) none of the above

Question 4

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 5

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

Accepted Answer

A) True 
 B)False

Question 6

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 7

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 8

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 9

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 10

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 11

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 12

The oxidation number of sulfur in SO3 is -6.

Accepted Answer

A) True 
 B)False

Question 13

The oxidation number of sodium in NaI is +1.

Accepted Answer

A) True 
 B)False

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

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

If you properly balance the following half reaction in acid solution,how many electrons would appear on the product side of the equation? NO (g)→ NO₃^1- (aq)

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

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

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

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

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

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

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

Reduction typically involves:

The oxidation number of sulfur in SO₃ is -6.

The oxidation number of sodium in NaI is +1.

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

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

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

If you properly balance the following half reaction in acid solution,how many electrons would appear on the product side of the equation? NO (g)→ NO31- (aq)

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

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

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

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

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

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

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

Reduction typically involves:

The oxidation number of sulfur in SO3 is -6.

The oxidation number of sodium in NaI is +1.

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 acid solution,how many electrons would appear on the product side of the equation? NO (g)→ NO₃^1- (aq)

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

The oxidation number of sulfur in SO₃ is -6.