Question 1

What is reduced in the following reaction?
2 Bi³⁺ + 3 Mg → 2 Bi + 3 Mg²⁺

Accepted Answer

A) Bi³⁺ 
B) Mg 
C) Bi 
D) Mg²⁺ 
A) Bi³⁺ 
B) Mg 
C) Bi 
D) Mg²⁺

Question 2

Copper is plated on zinc by immersing a piece of zinc into a solution containing copper(II)ions.In the plating reaction,copper(II)ions

Accepted Answer

A) lose two electrons and are oxidized. 
B) lose two electrons and are reduced. 
C) gain two electrons and are oxidized. 
D) gain two electrons and are reduced. 
A) lose two electrons and are oxidized. 
B) lose two electrons and are reduced. 
C) gain two electrons and are oxidized. 
D) gain two electrons and are reduced.

Question 3

A common use of lead storage batteries is automobiles.

Accepted Answer

A) True 
 B)False

Question 4

Copper is plated on zinc by immersing a piece of zinc into a solution containing copper(II)ions.In the plating reaction,copper II ions

Accepted Answer

A) gain two electrons and is are oxidized. 
B) gain two electrons and is are reduced. 
C) lose two electrons and is are reduced. 
D) lose two electrons and is are oxidized. 
A) gain two electrons and is are oxidized. 
B) gain two electrons and is are reduced. 
C) lose two electrons and is are reduced. 
D) lose two electrons and is are oxidized.

Question 5

Which substance is a common oxidizing agent?

Accepted Answer

A) C 
B) Na₂Cr₂O₇ 
C) N₂ 
D) K 
A) C 
B) Na₂Cr₂O₇ 
C) N₂ 
D) K

Question 6

When C₃H₈ is burned in oxygen,the products are

Accepted Answer

A) C + H₂. 
B) CH₂ ₊ H₂O. 
C) CO₂ + H₂. 
D) CO₂ + H₂O. 
A) C + H₂. 
B) CH₂ ₊ H₂O. 
C) CO₂ + H₂. 
D) CO₂ + H₂O.

Question 7

Specialty chemicals are generally much simpler than industrial chemicals.

Accepted Answer

A) True 
 B)False

Question 8

Which substance is a reducing agent?

Accepted Answer

A) C 
B) I₂ 
C) H₂O₂ 
D) TeO₂ 
A) C 
B) I₂ 
C) H₂O₂ 
D) TeO₂

Question 9

All of the following are true for green oxidation catalysts EXCEPT

Accepted Answer

A) they are often carcinogenic. 
B) they often rely on transition metals. 
C) they often allow reactions to run at lower temperatures. 
D) they are more efficient than traditional catalysts. 
A) they are often carcinogenic. 
B) they often rely on transition metals. 
C) they often allow reactions to run at lower temperatures. 
D) they are more efficient than traditional catalysts.

Question 10

When hydrogen is added to a compound,which of the following can act as a catalyst?

Accepted Answer

A) P 
B) C 
C) S 
D) Pd 
A) P 
B) C 
C) S 
D) Pd

Question 11

Roughly ________% of all iron and steel produced each year is used to replace corroded items.

Accepted Answer

A) 4 
B) 20 
C) 50 
D) 75 
A) 4 
B) 20 
C) 50 
D) 75

Question 12

In the reaction N₂ + 3 H₂ → 2 NH₃,nitrogen is

Accepted Answer

A) a product. 
B) a reducing agent. 
C) an oxidizing agent. 
D) a catalyst. 
A) a product. 
B) a reducing agent. 
C) an oxidizing agent. 
D) a catalyst.

Question 13

Sodium bisulfite converts bromine (Br₂)to bromide (Br⁻).Sodium bisulfite is a(n)

Accepted Answer

A) acid. 
B) base. 
C) oxidizing agent. 
D) reducing agent. 
A) acid. 
B) base. 
C) oxidizing agent. 
D) reducing agent.

Question 14

The most abundant element (by mass)in the human body is

Accepted Answer

A) oxygen. 
B) carbon. 
C) nitrogen. 
D) water. 
A) oxygen. 
B) carbon. 
C) nitrogen. 
D) water.

Question 15

A catalyst acts by raising the amount of energy available for a reaction to occur.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following statements about the rusting of iron is true?

Accepted Answer

A) Iron is reduced in the presence of oxygen. 
B) Iron is oxidized in the presence of oxygen. 
C) The iron(III)hydroxide forms a hard coating that protects the iron from undergoing further corrosion. 
D) Iron will rust more quickly in the absence of water. 
A) Iron is reduced in the presence of oxygen. 
B) Iron is oxidized in the presence of oxygen. 
C) The iron(III)hydroxide forms a hard coating that protects the iron from undergoing further corrosion. 
D) Iron will rust more quickly in the absence of water.

Question 17

Silver is plated on copper by immersing a piece of copper into a solution containing silver ions.In the plating reaction,silver ions

Accepted Answer

A) lose one electron and are oxidized. 
B) lose one electron and are reduced. 
C) gain one electron and are oxidized. 
D) gain one electron and are reduced. 
A) lose one electron and are oxidized. 
B) lose one electron and are reduced. 
C) gain one electron and are oxidized. 
D) gain one electron and are reduced.

Question 18

When metals react with oxygen,they form

Accepted Answer

A) oxygen gas. 
B) noble gases. 
C) oxides. 
D) nonmetals. 
A) oxygen gas. 
B) noble gases. 
C) oxides. 
D) nonmetals.

Question 19

All redox reactions occur with the transfer of

Accepted Answer

A) protons. 
B) electrons. 
C) chlorine. 
D) nitrogen. 
A) protons. 
B) electrons. 
C) chlorine. 
D) nitrogen.

Question 20

The oxidation number for l in l₂ is

Accepted Answer

A) -2. 
B) -1. 
C) 0) 
D) +1. 
A) -2. 
B) -1. 
C) 0) 
D) +1.

Exam 8: Oxidation and Reduction

What is reduced in the following reaction? 2 Bi³⁺ + 3 Mg → 2 Bi + 3 Mg²⁺

Copper is plated on zinc by immersing a piece of zinc into a solution containing copper(II)ions.In the plating reaction,copper(II)ions

A common use of lead storage batteries is automobiles.

Copper is plated on zinc by immersing a piece of zinc into a solution containing copper(II)ions.In the plating reaction,copper II ions

Which substance is a common oxidizing agent?

When C₃H₈ is burned in oxygen,the products are

Specialty chemicals are generally much simpler than industrial chemicals.

Which substance is a reducing agent?

All of the following are true for green oxidation catalysts EXCEPT

When hydrogen is added to a compound,which of the following can act as a catalyst?

Roughly ________% of all iron and steel produced each year is used to replace corroded items.

In the reaction N₂ + 3 H₂ → 2 NH₃,nitrogen is

Sodium bisulfite converts bromine (Br₂)to bromide (Br⁻).Sodium bisulfite is a(n)

The most abundant element (by mass)in the human body is

A catalyst acts by raising the amount of energy available for a reaction to occur.

Which of the following statements about the rusting of iron is true?

Silver is plated on copper by immersing a piece of copper into a solution containing silver ions.In the plating reaction,silver ions

When metals react with oxygen,they form

All redox reactions occur with the transfer of

The oxidation number for l in l₂ is

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