Question 1

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

Accepted Answer

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

Question 2

Antioxidant vitamins

Accepted Answer

A)  react with DNA 
B)  donate electrons to free radicals 
C)  are reduced 
D)  form free radicals in the body

Question 3

Which of the following is a free radical?

Accepted Answer

A)  ozone, O3 
B)  fluorine, F2 
C)  chlorine, Cl2 
D)  nitrogen dioxide, NO2

Question 4

A battery which may be recharged is called a(n)

Accepted Answer

A)  primary battery 
B)  dry cell 
C)  electroplating cell 
D)  secondary battery

Question 5

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 6

Which one of the following will not combine with oxygen?

Accepted Answer

A)  nitrogen 
B)  aluminum 
C)  hydrogen 
D)  helium

Question 7

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

Accepted Answer

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

Question 8

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

Accepted Answer

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

Question 9

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 10

PbSO4, Pb, and H2SO4 are chemicals in

Accepted Answer

A)  dry cell 
B)  primary battery 
C)  salt bridge 
D)  automobile battery

Question 11

Which of the following might prevent corrosion of iron?

Accepted Answer

A)  a water spray 
B)  a coating of zinc 
C)  acid treatments 
D)  salt solutions

Question 12

Which of the batteries listed below is a primary battery?

Accepted Answer

A)  lithium ion battery 
B)  alkaline battery 
C)  Ni-Cad battery 
D)  lead acid battery

Exam 10: Oxidation-Reduction Reactions

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

Antioxidant vitamins

Which of the following is a free radical?

A battery which may be recharged is called a(n)

Charge is transported from place to place in a battery by

Which one of the following will not combine with oxygen?

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

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

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

PbSO₄, Pb, and H₂SO₄ are chemicals in

Which of the following might prevent corrosion of iron?

Which of the batteries listed below is a primary battery?

Exam 10: Oxidation-Reduction Reactions

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

Antioxidant vitamins

Which of the following is a free radical?

A battery which may be recharged is called a(n)

Charge is transported from place to place in a battery by

Which one of the following will not combine with oxygen?

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

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

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

PbSO4, Pb, and H2SO4 are chemicals in

Which of the following might prevent corrosion of iron?

Which of the batteries listed below is a primary battery?

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

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

PbSO₄, Pb, and H₂SO₄ are chemicals in