Question 1

Which of the following is a free radical?

Accepted Answer

A)  SO2 
B)  SO3 
C)  NO 
D)  N2O

Question 2

The reducing agent in the following reaction is ___________. I₂ + Zn $\to$ 2I^- + Zn²⁺

Accepted Answer

The answer of The reducing agent in the following reaction...

Question 3

Which of the following is not necessary for corrosion of iron?

Accepted Answer

A)  iron 
B)  water 
C)  light 
D)  oxygen

Question 4

Free radicals which are also oxidizing agents do not occur naturally in the human body.

Accepted Answer

A) True 
 B)False

Question 5

Consider the reaction: 3Fe2+(aq) + 2Al(s) $\to$  3Fe(s) + 2Al3+(aq)
Which of the following statements is true about Fe2+?

Accepted Answer

A)  Fe2+ is losing electrons. 
B)  Fe2+ is oxidized. 
C)  Fe2+ is the oxidizing agent. 
D)  Fe2+ is the reducing agent.

Question 6

Charge is transported from place to place in a battery by

Accepted Answer

A)  an anode. 
B)  a cathode. 
C)  the migration of ions. 
D)  an external electrical circuit.

Question 7

Vitamin C and beta-carotene are antioxidants found currently in vitamin supplements.

Accepted Answer

A) True 
 B)False

Question 8

Consider the following reaction.
3FeS1U1P12+S1S1P0(aq) + 2Al(s) $\to$  3Fe(s) + 2AlS1U1P13+S1S1P0(aq)
This reaction takes place in the electrochemical cell shown below.  
Complete the following questions using the letters shown in the image.
-Al should be placed at letter _____.

Accepted Answer

The answer of Consider the following reaction.
3FeS1U1P12+S1S1P0(aq) + 2Al(s) $\to$...

Question 9

Which molecule would be a good reducing agent?

Accepted Answer

A)  O2 
B)  O3 
C)  H2 
D)  H2O2

Question 10

Reduction can be viewed as a either a gain of electrons or hydrogen atoms.

Accepted Answer

A) True 
 B)False

Question 11

In a fuel cell using oxygen as the oxidizer and hydrogen as the fuel, what is the overall cell reaction?

Accepted Answer

A)  H2O $\to$  H2 + O2 
B)  2 H2 + O2 $\to$  2 H2O 
C)  H2O + 4 e- $\to$  2 H2 + 4 OH- 
D)  O2 + 4 H+ + 4 e- $\to$  2 H2O

Question 12

In a lead storage battery, what lead compound is formed at both the cathode and the anode during discharge?

Accepted Answer

A)  lead oxide (PbO2) 
B)  lead chloride (PbCl2) 
C)  lead sulfate (PbSO4) 
D)  lead oxide (PbO)

Question 13

Identify the reduced species in the following equation CH4(g) + 2O2(g) $\to$ CO2(g) + 2H2O(g)

Accepted Answer

A)  C 
B)  O2 
C)  H 
D)  H2O

Question 14

Which of the following equations represents the reduction of carbon?

Accepted Answer

A)  C + 2 H2 $\to$  CH4 
B)  C + O2 $\to$ CO2 
C)  2 C + O2 $\to$  2 CO 
D)  C2+ $\to$  C4+ + 2e-

Question 15

In the equation 2 Na(s) + Cl2(g) $\to$ 2 Na+ + 2 Cl-, the oxidizing agent is

Accepted Answer

A)  Na(s). 
B)  Cl2(g). 
C)  Na+. 
D)  Cl-.

Question 16

Identify the oxidized species in the following equation 4Al(s) + 3O2(g) $\to$  2Al2O3(s)

Accepted Answer

A)  Al(s) 
B)  O2(g) 
C)  Al3+ 
D)  O2-

Question 17

Consider the following reaction.
3FeS1U1P12+S1S1P0(aq) + 2Al(s) $\to$  3Fe(s) + 2AlS1U1P13+S1S1P0(aq)
This reaction takes place in the electrochemical cell shown below.  
Complete the following questions using the letters shown in the image.
-If the electrolyte contains nitrate ions, they will move from compartment ___ to compartment ___.

Accepted Answer

The answer of Consider the following reaction.
3FeS1U1P12+S1S1P0(aq) + 2Al(s) $\to$...

Question 18

Consider the following reaction.
3FeS1U1P12+S1S1P0(aq) + 2Al(s) $\to$  3Fe(s) + 2AlS1U1P13+S1S1P0(aq)
This reaction takes place in the electrochemical cell shown below.  
Complete the following questions using the letters shown in the image.
-The electrons flow from electrode _____ to electrode _____.

Accepted Answer

The answer of Consider the following reaction.
3FeS1U1P12+S1S1P0(aq) + 2Al(s) $\to$...

Question 19

Reducing agents gain electrons and are oxidized.

Accepted Answer

A) True 
 B)False

Question 20

In an electrolysis reaction, oxidation occurs at which electrode?

Accepted Answer

A)  cathode 
B)  anode 
C)  both electrodes 
D)  neither electrode

Exam 10: Oxidation-Reduction Reactions

Which of the following is a free radical?

The reducing agent in the following reaction is ___________. I₂ + Zn $\to$ 2I^- + Zn²⁺

Which of the following is not necessary for corrosion of iron?

Free radicals which are also oxidizing agents do not occur naturally in the human body.

Consider the reaction: 3Fe²⁺(aq) + 2Al(s) $\to$ 3Fe(s) + 2Al³⁺(aq) Which of the following statements is true about Fe²⁺?

Charge is transported from place to place in a battery by

Vitamin C and beta-carotene are antioxidants found currently in vitamin supplements.

Which molecule would be a good reducing agent?

Reduction can be viewed as a either a gain of electrons or hydrogen atoms.

In a fuel cell using oxygen as the oxidizer and hydrogen as the fuel, what is the overall cell reaction?

In a lead storage battery, what lead compound is formed at both the cathode and the anode during discharge?

Identify the reduced species in the following equation CH₄(g) + 2O₂(g) $\to$ CO₂(g) + 2H₂O(g)

Which of the following equations represents the reduction of carbon?

In the equation 2 Na(s) + Cl₂(g) $\to$ 2 Na⁺ + 2 Cl^-, the oxidizing agent is

Identify the oxidized species in the following equation 4Al(s) + 3O₂(g) $\to$ 2Al₂O₃(s)

Reducing agents gain electrons and are oxidized.

In an electrolysis reaction, oxidation occurs at which electrode?

Exam 10: Oxidation-Reduction Reactions

Which of the following is a free radical?

The reducing agent in the following reaction is ___________. I2 + Zn →\to→ 2I- + Zn2+

Which of the following is not necessary for corrosion of iron?

Free radicals which are also oxidizing agents do not occur naturally in the human body.

Consider the reaction: 3Fe2+(aq) + 2Al(s) →\to→ 3Fe(s) + 2Al3+(aq) Which of the following statements is true about Fe2+?

Charge is transported from place to place in a battery by

Vitamin C and beta-carotene are antioxidants found currently in vitamin supplements.

Consider the following reaction. 3Fe2+(aq) + 2Al(s) →\to→ 3Fe(s) + 2Al3+(aq) This reaction takes place in the electrochemical cell shown below. Complete the following questions using the letters shown in the image. -Al should be placed at letter _____.

Which molecule would be a good reducing agent?

Reduction can be viewed as a either a gain of electrons or hydrogen atoms.

In a fuel cell using oxygen as the oxidizer and hydrogen as the fuel, what is the overall cell reaction?

In a lead storage battery, what lead compound is formed at both the cathode and the anode during discharge?

Identify the reduced species in the following equation CH4(g) + 2O2(g) →\to→ CO2(g) + 2H2O(g)

Which of the following equations represents the reduction of carbon?

In the equation 2 Na(s) + Cl2(g) →\to→ 2 Na+ + 2 Cl-, the oxidizing agent is

Identify the oxidized species in the following equation 4Al(s) + 3O2(g) →\to→ 2Al2O3(s)

Consider the following reaction. 3Fe2+(aq) + 2Al(s) →\to→ 3Fe(s) + 2Al3+(aq) This reaction takes place in the electrochemical cell shown below. Complete the following questions using the letters shown in the image. -The electrons flow from electrode _____ to electrode _____.

Reducing agents gain electrons and are oxidized.

In an electrolysis reaction, oxidation occurs at which electrode?

The reducing agent in the following reaction is ___________. I₂ + Zn $\to$ 2I^- + Zn²⁺

Consider the reaction: 3Fe²⁺(aq) + 2Al(s) $\to$ 3Fe(s) + 2Al³⁺(aq) Which of the following statements is true about Fe²⁺?

Identify the reduced species in the following equation CH₄(g) + 2O₂(g) $\to$ CO₂(g) + 2H₂O(g)

In the equation 2 Na(s) + Cl₂(g) $\to$ 2 Na⁺ + 2 Cl^-, the oxidizing agent is

Identify the oxidized species in the following equation 4Al(s) + 3O₂(g) $\to$ 2Al₂O₃(s)