Question 1

Cell phones batteries are typically rechargeable. How do they differ from non-rechargeable batteries?

Accepted Answer

A)   A rechargeable battery has the ability to undergo a double replacement reaction while non-rechargeable batteries do not. Therefore, the forward direction provides electrical energy and connecting the battery to a charger reverses the reaction to reform the starting the materials.
B)   A rechargeable battery has the ability to undergo a reversible redox reaction while non-rechargeable batteries do not. Therefore, the forward direction provides electrical energy and connecting the battery to a charger reverses the reaction to reform the starting the materials.
C)   A rechargeable battery has the ability to undergo a redox reaction while non-rechargeable batteries do not. Therefore, the reverse direction provides electrical energy and connecting the battery to a charger reverses the reaction to reform the starting the materials.D) A) and B)
E) None of the above

Question 2

Which is the reducing agent in the combustion of methanol?

Accepted Answer

A)   CH3OH
B)   O2
C)   CO2D) None of the above
E) All of the above

Question 3

Based on the following reduction potential data, which is the strongest oxidizing agent?  E°red = +1.78 V for H2O2aq)  + 2H+aq)  + 2e-  →\rightarrow→   2H2Ol) 
E°red = +0.800 V for Ag+aq)  + e-  →\rightarrow→   Ags) 
E°red = -0.130 V for Pb2+aq)  + 2e-  →\rightarrow→  Pbs)

Accepted Answer

A)   Pb2+aq) 
B)   H2O2aq) 
C)   Ag+aq)  D) B) and C)
E) All of the above

Question 4

Propane is used as a fuel source on many barbeque grills. What is undergoing oxidation during the burning of propane while grilling?

Accepted Answer

A)   CH3CH2CH3
B)   O2
C)   CO2D) All of the above
E) None of the above

Question 5

What is the ∆G°rxn for a 2 electron transfer electrochemical cell with a standard cell potential of +0.770 V.

Accepted Answer

A)   -74.3 kJ/mol
B)   -149 kJ/mol
C)   +74.3 kJ/molD) B) and C)
E) A) and C)

Question 6

The cathode terminal in a voltaic cell is the _____ terminal.

Accepted Answer

A)   -) 
B)   +) 
C)   neutralD) All of the above
E) A) and C)

Question 7

The following can be used as an electrolyte for a salt bridge in a voltaic cell?  Paired item 1)

Accepted Answer

A)   CCl4l) 
B)   CH3CH2OHl) 
C)   Na2SO4aq) D) A) and B)
E) A) and C)

Question 8

The following can be used as an electrolyte for a salt bridge in a voltaic cell?

Accepted Answer

A)   KNO3aq) 
B)   H2Ol) 
C)   CH3OHl) D) A) and C)
E) None of the above

Question 9

Which of the following is a strong oxidizing agent?

Accepted Answer

A)   N2
B)   O2
C)   H2D) None of the above
E) B) and C)

Question 10

Which is the oxidizing agent in the combustion of methanol?

Accepted Answer

A)   CH3OH
B)   O2
C)   CO2D) All of the above
E) A) and B)

Question 11

Which strong acid is commonly used in automobile batteries?

Accepted Answer

A)   HCl
B)   H2SO4
C)   HNO3D) A) and B)
E) A) and C)

Question 12

What is the oxidation state of oxygen in K2O2?

Accepted Answer

A)   0
B)   -1
C)   -2D) A) and B)
E) All of the above

Question 13

In a voltaic cell, reduction occurs at the _____.

Accepted Answer

A)   anode terminal
B)   cathode terminal
C)   negative terminalD) A) and C)
E) All of the above

Question 14

Based on the following reduction potential data, which is the strongest reducing agent?  E°red = +1.78 V for H2O2aq)  + 2H+aq)  + 2e-  →\rightarrow→   2H2Ol) 
E°red = +0.800 V for Ag+aq)  + e-  →\rightarrow→   Ags) 
E°red = -0.130 V for Pb2+aq)  + 2e-  →\rightarrow→   Pbs)

Accepted Answer

A)   Pbs) 
B)   Ags) 
C)   H2Ol)  D) A) and B)
E) A) and C) A

Question 15

In a voltaic cell, electrons are received at the _____.

Accepted Answer

A)   cathode terminal
B)   negative terminal
C)   anode terminalD) All of the above
E) A) and C)

Question 16

The standard cell potential is +0.460 V for the following electrochemical cell reaction: Cus)  + 2Ag+aq)   →\rightarrow→   Cu2+aq)  + 2Ags) . What is the ∆G°rxn?

Accepted Answer

A)   -88.8 kJ/mol
B)   -44.4 kJ/mol
C)   +44.4 kJ/mol D) A) and B)
E) A) and C)

Question 17

Write a balanced redox reaction for the formation of rust on iron metal and identify the correct oxidizing agent and/or reducing agent.

Accepted Answer

A)   Iron is the oxidizing agent and O2 is neither a reducing agent nor an oxidizing agent
B)   Iron is the oxidizing agent and O2 is the reducing agent
C)   Iron is the reducing agent and O2 is the oxidizing agentD) All of the above
E) A) and C) C

Question 18

Propane is used as a fuel source on many barbeque grills. What is undergoing reduction during the burning of propane while grilling?  Paired item 1)

Accepted Answer

A)   CH3CH2CH3
B)   O2
C)   CO2D) A) and B)
E) A) and C)

Question 19

Based on the reduction potential data, what is the standard cell potential for the following electrochemical cell reaction: Cus)  + 2Ag+  →\rightarrow→   Cu2+aq)  + 2Ags) ?  Paired item 1)  E°red = +0.800 V for Ag+aq)  + e- →\rightarrow→  Ags) 
E°red = +0.340 V for Cu2+aq)  + 2e-  →\rightarrow→   Cus)

Accepted Answer

A)   +1.14 V
B)   +0.460 V
C)   +1.26 V D) A) and B)
E) B) and C) B

Question 20

Based on the following reduction potential data, what is the ∆G°rxn for the following electrochemical cell reaction: Zns)  + Cu2+aq)   →\rightarrow→  Zn2+aq)  + Cus) ?  E°red = -0.763 V for Zn2+aq)  + 2e-  →\rightarrow→   Zns) 
E°red = +0.340 V for Cu2+aq)  + 2e-  →\rightarrow→   Cus)

Accepted Answer

A)   +106 kJ/mol
B)   -106 kJ/mol
C)   -213 kJ/mol D) A) and B)
E) All of the above

Exam 17: Electrochemistry

Cell phones batteries are typically rechargeable. How do they differ from non-rechargeable batteries?

Correct Answer
verified

Which is the reducing agent in the combustion of methanol?

Correct Answer
verified

Based on the following reduction potential data, which is the strongest oxidizing agent? E°_red = +1.78 V for H₂O₂aq) + 2H⁺aq) + 2e^- $\rightarrow$ 2H₂Ol) E°_red = +0.800 V for Ag⁺aq) + e^- $\rightarrow$ Ags) E°_red = -0.130 V for Pb²⁺aq) + 2e^- $\rightarrow$ Pbs)

Correct Answer
verified

Propane is used as a fuel source on many barbeque grills. What is undergoing oxidation during the burning of propane while grilling?

Correct Answer
verified

What is the ∆G°_rxn for a 2 electron transfer electrochemical cell with a standard cell potential of +0.770 V.

Correct Answer
verified

The cathode terminal in a voltaic cell is the _____ terminal.

Correct Answer
verified

The following can be used as an electrolyte for a salt bridge in a voltaic cell? Paired item 1)

Correct Answer
verified

The following can be used as an electrolyte for a salt bridge in a voltaic cell?

Correct Answer
verified

Which of the following is a strong oxidizing agent?

Correct Answer
verified

Which is the oxidizing agent in the combustion of methanol?

Correct Answer
verified

Which strong acid is commonly used in automobile batteries?

Correct Answer
verified

What is the oxidation state of oxygen in K₂O₂?

Correct Answer
verified

In a voltaic cell, reduction occurs at the _____.

Correct Answer
verified

Based on the following reduction potential data, which is the strongest reducing agent? E°_red = +1.78 V for H₂O₂aq) + 2H⁺aq) + 2e- $\rightarrow$ 2H₂Ol) E°_red = +0.800 V for Ag⁺aq) + e^- $\rightarrow$ Ags) E°_red = -0.130 V for Pb²⁺aq) + 2e^- $\rightarrow$ Pbs)

Correct Answer
verified
A

In a voltaic cell, electrons are received at the _____.

Correct Answer
verified

The standard cell potential is +0.460 V for the following electrochemical cell reaction: Cus) + 2Ag⁺aq) $\rightarrow$ Cu²⁺aq) + 2Ags) . What is the ∆G°_rxn?

Correct Answer
verified

Write a balanced redox reaction for the formation of rust on iron metal and identify the correct oxidizing agent and/or reducing agent.

Correct Answer
verified
C

Propane is used as a fuel source on many barbeque grills. What is undergoing reduction during the burning of propane while grilling? Paired item 1)

Correct Answer
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Correct Answer
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B

Based on the following reduction potential data, what is the ∆G°_rxn for the following electrochemical cell reaction: Zns) + Cu²⁺aq) $\rightarrow$ Zn²⁺aq) + Cus) ? E°_red = -0.763 V for Zn²⁺aq) + 2e^- $\rightarrow$ Zns) E°_red = +0.340 V for Cu²⁺aq) + 2e^- $\rightarrow$ Cus)

Correct Answer
verified

Exam 17: Electrochemistry

Cell phones batteries are typically rechargeable. How do they differ from non-rechargeable batteries?

Correct AnswerverifiedShow Answer

Which is the reducing agent in the combustion of methanol?

Correct AnswerverifiedShow Answer

Based on the following reduction potential data, which is the strongest oxidizing agent? E°red = +1.78 V for H2O2aq) + 2H+aq) + 2e- →\rightarrow→ 2H2Ol) E°red = +0.800 V for Ag+aq) + e- →\rightarrow→ Ags) E°red = -0.130 V for Pb2+aq) + 2e- →\rightarrow→ Pbs)

Correct AnswerverifiedShow Answer

Propane is used as a fuel source on many barbeque grills. What is undergoing oxidation during the burning of propane while grilling?

Correct AnswerverifiedShow Answer

What is the ∆G°rxn for a 2 electron transfer electrochemical cell with a standard cell potential of +0.770 V.

Correct AnswerverifiedShow Answer

The cathode terminal in a voltaic cell is the _____ terminal.

Correct AnswerverifiedShow Answer

The following can be used as an electrolyte for a salt bridge in a voltaic cell? Paired item 1)

Correct AnswerverifiedShow Answer

The following can be used as an electrolyte for a salt bridge in a voltaic cell?

Correct AnswerverifiedShow Answer

Which of the following is a strong oxidizing agent?

Correct AnswerverifiedShow Answer

Which is the oxidizing agent in the combustion of methanol?

Correct AnswerverifiedShow Answer

Which strong acid is commonly used in automobile batteries?

Correct AnswerverifiedShow Answer

What is the oxidation state of oxygen in K2O2?

Correct AnswerverifiedShow Answer

In a voltaic cell, reduction occurs at the _____.

Correct AnswerverifiedShow Answer

Based on the following reduction potential data, which is the strongest reducing agent? E°red = +1.78 V for H2O2aq) + 2H+aq) + 2e- →\rightarrow→ 2H2Ol) E°red = +0.800 V for Ag+aq) + e- →\rightarrow→ Ags) E°red = -0.130 V for Pb2+aq) + 2e- →\rightarrow→ Pbs)

Correct AnswerverifiedA

In a voltaic cell, electrons are received at the _____.

Correct AnswerverifiedShow Answer

The standard cell potential is +0.460 V for the following electrochemical cell reaction: Cus) + 2Ag+aq) →\rightarrow→ Cu2+aq) + 2Ags) . What is the ∆G°rxn?

Correct AnswerverifiedShow Answer

Write a balanced redox reaction for the formation of rust on iron metal and identify the correct oxidizing agent and/or reducing agent.

Correct AnswerverifiedC

Propane is used as a fuel source on many barbeque grills. What is undergoing reduction during the burning of propane while grilling? Paired item 1)

Correct AnswerverifiedShow Answer

Correct AnswerverifiedB

Based on the following reduction potential data, what is the ∆G°rxn for the following electrochemical cell reaction: Zns) + Cu2+aq) →\rightarrow→ Zn2+aq) + Cus) ? E°red = -0.763 V for Zn2+aq) + 2e- →\rightarrow→ Zns) E°red = +0.340 V for Cu2+aq) + 2e- →\rightarrow→ Cus)

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Based on the following reduction potential data, which is the strongest oxidizing agent? E°_red = +1.78 V for H₂O₂aq) + 2H⁺aq) + 2e^- $\rightarrow$ 2H₂Ol) E°_red = +0.800 V for Ag⁺aq) + e^- $\rightarrow$ Ags) E°_red = -0.130 V for Pb²⁺aq) + 2e^- $\rightarrow$ Pbs)

Correct Answer
verified

Correct Answer
verified

What is the ∆G°_rxn for a 2 electron transfer electrochemical cell with a standard cell potential of +0.770 V.

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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What is the oxidation state of oxygen in K₂O₂?

Correct Answer
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Correct Answer
verified

Based on the following reduction potential data, which is the strongest reducing agent? E°_red = +1.78 V for H₂O₂aq) + 2H⁺aq) + 2e- $\rightarrow$ 2H₂Ol) E°_red = +0.800 V for Ag⁺aq) + e^- $\rightarrow$ Ags) E°_red = -0.130 V for Pb²⁺aq) + 2e^- $\rightarrow$ Pbs)

Correct Answer
verified
A

Correct Answer
verified

The standard cell potential is +0.460 V for the following electrochemical cell reaction: Cus) + 2Ag⁺aq) $\rightarrow$ Cu²⁺aq) + 2Ags) . What is the ∆G°_rxn?

Correct Answer
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Correct Answer
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C

Correct Answer
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Correct Answer
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B

Based on the following reduction potential data, what is the ∆G°_rxn for the following electrochemical cell reaction: Zns) + Cu²⁺aq) $\rightarrow$ Zn²⁺aq) + Cus) ? E°_red = -0.763 V for Zn²⁺aq) + 2e^- $\rightarrow$ Zns) E°_red = +0.340 V for Cu²⁺aq) + 2e^- $\rightarrow$ Cus)

Correct Answer
verified