Question 1

For a half-cell reaction that has a high positive reduction potential you would expect _________ .

Accepted Answer

A)  that it is a good reductant 
B)  that it is a good oxidant 
C)  that it will react fast 
D)  that it will react slowly 
E)  It is neither an oxidant nor a reductant.

Question 2

In the discoloration of cut fruit, such as apples, what is the role of the citrate and citric acid?

Accepted Answer

A)  It oxidizes the fruit. 
B)  It reduces the fruit. 
C)  It reacts with oxygen. 
D)  It reacts with the enzymes. 
E)  None of the above.

Question 3

The production of metals from ore with carbon is known as _________ .

Accepted Answer

A)  bleaching 
B)  tarnishing 
C)  oxidation 
D)  combustion 
E)  smelting

Question 4

For a half-cell reaction that has a high negative reduction potential you would expect _________ .

Accepted Answer

A)  that it is a good reductant 
B)  that it is a good oxidant 
C)  that it will react fast 
D)  that it will react slowly 
E)  It is neither an oxidant nor a reductant.

Question 5

The oxidizing agent will cause other things to _________ .

Accepted Answer

A)  be reduced 
B)  be oxidized 
C)  become corroded 
D)  combust 
E)  All of the above.

Question 6

A negative cell potential means that the reaction __________ .

Accepted Answer

A)  can only proceed in the forward direction 
B)  can be used to make a good battery 
C)  is spontaneous and proceeds in the forward direction 
D)  the reverse reaction will proceed spontaneously 
E)  None of the above.

Question 7

If your galvanic cell was designed with salt bridge that only allowed positive ions to flow through it, similar to what is found in lithium ion batteries, during discharge you would expect ___________ .

Accepted Answer

A)  the electrolyte to remain unchanged 
B)  the positive ions to move from the cathode towards the anode 
C)  the positive ions to move from the anode towards the cathode 
D)  the ions to move in the opposite direction of that of the electron flow 
E)  None of the above.

Question 8

What are the major advantages of fuel cells over traditional batteries?

Accepted Answer

A)  they use readily available fuels 
B)  they produce a greater number of electrons and therefore a higher current 
C)  the fuels produce a much higher voltage than typical anode and cathode materials 
D)  can be continuously supplied with fuel and therefore do not need to be recharged 
E)  All of the above

Question 9

Determine the oxidation state of the carbon in the compound below:
CO2

Accepted Answer

A)  +4 
B)  +3 
C)  +2 
D)  +1 
E)  None of the above.

Question 10

Determine the oxidation state of the metal below:
Fe2O3

Accepted Answer

A)  +4 
B)  +3 
C)  +2 
D)  +1 
E)  None of the above.

Question 11

Utilizing the half-cell potential information provided in Table 10.1, what can you say about the following two half reactions?
Br2(l) + 2e- F1S1S1W1F1F1F10 2 Br -(aq)  Potential = 1.09 V
F2(g) + 2e- F1S1S1W1F1F1F10 2 F -(aq)  Potential = 2.87 V

Accepted Answer

A)  Bromine will react faster than fluorine. 
B)  Bromine will react slower than fluorine. 
C)  Bromine is less likely to be reduced than fluorine. 
D)  Bromine is more likely to be reduced than fluorine. 
E)  None of the above.

Question 12

Which term below best describes the positively charged location on a battery?

Accepted Answer

A)  the cathode 
B)  the anode 
C)  the terminal 
D)  the salt bridge 
E)  the cell

Question 13

The role of the oxidizing agent is to ______ .

Accepted Answer

A)  undergo oxidation 
B)  undergo reduction 
C)  lose electrons 
D)  Both a and c 
E)  None of the above.

Question 14

Silicon, with 4 valence electrons, is the most widely used material for photovoltaic devices even though it is only a semiconductor. You can improve the conductivity with dopants. Which of these elements would best serve to create an p-type semiconductor when added to silicon?

Accepted Answer

A)  B 
B)  C 
C)  Ge 
D)  P 
E)  Both a and b

Question 15

What quantity is used to measure the number of electrons flowing in a circuit at a given time?

Accepted Answer

A)  galvins 
B)  cells 
C)  volts 
D)  amperes 
E)  None of the above

Question 16

Impact of ________ on a photovoltaic device creates a current in a circuit.

Accepted Answer

A)  electrons 
B)  photons 
C)  oxidants 
D)  reductants 
E)  Both a and b

Question 17

Which term below best describes the negatively charged location on a battery?

Accepted Answer

A)  the cathode 
B)  the anode 
C)  the terminal 
D)  the salt bridge 
E)  the cell

Question 18

Which statement best describes the negatively charged location on a battery?

Accepted Answer

A)  the location where oxidation takes place 
B)  the location where reduction takes place 
C)  the place where electron are reduced 
D)  the place where ions move between the half cells 
E)  All of the above

Question 19

Which of the following utilizes the same principal techniques of electrolysis?

Accepted Answer

A)  electroplating 
B)  industrial production of sodium hydroxide 
C)  industrial production of aluminum 
D)  galvanization 
E)  All of the above

Question 20

An electrical circuit can be described simply as ________ .

Accepted Answer

A)  transfer of electrons between two elements 
B)  the path through which electrons travel 
C)  resulting from a redox reaction. 
D)  All of the above. 
E)  None of the above.

Exam 10: Energy From Electron Transfer

For a half-cell reaction that has a high positive reduction potential you would expect _________ .

In the discoloration of cut fruit, such as apples, what is the role of the citrate and citric acid?

The production of metals from ore with carbon is known as _________ .

For a half-cell reaction that has a high negative reduction potential you would expect _________ .

The oxidizing agent will cause other things to _________ .

A negative cell potential means that the reaction __________ .

If your galvanic cell was designed with salt bridge that only allowed positive ions to flow through it, similar to what is found in lithium ion batteries, during discharge you would expect ___________ .

What are the major advantages of fuel cells over traditional batteries?

Determine the oxidation state of the carbon in the compound below: CO₂

Determine the oxidation state of the metal below: Fe₂O₃

Utilizing the half-cell potential information provided in Table 10.1, what can you say about the following two half reactions? Br_2(l) + 2e^-  2 Br ^-_(aq)Potential = 1.09 V F_2(g) + 2e^-  2 F ^-_(aq)Potential = 2.87 V

Which term below best describes the positively charged location on a battery?

The role of the oxidizing agent is to ______ .

Silicon, with 4 valence electrons, is the most widely used material for photovoltaic devices even though it is only a semiconductor. You can improve the conductivity with dopants. Which of these elements would best serve to create an p-type semiconductor when added to silicon?

What quantity is used to measure the number of electrons flowing in a circuit at a given time?

Impact of ________ on a photovoltaic device creates a current in a circuit.

Which term below best describes the negatively charged location on a battery?

Which statement best describes the negatively charged location on a battery?

Which of the following utilizes the same principal techniques of electrolysis?

An electrical circuit can be described simply as ________ .

Exam 10: Energy From Electron Transfer

For a half-cell reaction that has a high positive reduction potential you would expect _________ .

In the discoloration of cut fruit, such as apples, what is the role of the citrate and citric acid?

The production of metals from ore with carbon is known as _________ .

For a half-cell reaction that has a high negative reduction potential you would expect _________ .

The oxidizing agent will cause other things to _________ .

A negative cell potential means that the reaction __________ .

If your galvanic cell was designed with salt bridge that only allowed positive ions to flow through it, similar to what is found in lithium ion batteries, during discharge you would expect ___________ .

What are the major advantages of fuel cells over traditional batteries?

Determine the oxidation state of the carbon in the compound below: CO2

Determine the oxidation state of the metal below: Fe2O3

Utilizing the half-cell potential information provided in Table 10.1, what can you say about the following two half reactions? Br2(l) + 2e-  2 Br -(aq) Potential = 1.09 V F2(g) + 2e-  2 F -(aq) Potential = 2.87 V

Which term below best describes the positively charged location on a battery?

The role of the oxidizing agent is to ______ .

Silicon, with 4 valence electrons, is the most widely used material for photovoltaic devices even though it is only a semiconductor. You can improve the conductivity with dopants. Which of these elements would best serve to create an p-type semiconductor when added to silicon?

What quantity is used to measure the number of electrons flowing in a circuit at a given time?

Impact of ________ on a photovoltaic device creates a current in a circuit.

Which term below best describes the negatively charged location on a battery?

Which statement best describes the negatively charged location on a battery?

Which of the following utilizes the same principal techniques of electrolysis?

An electrical circuit can be described simply as ________ .

Determine the oxidation state of the carbon in the compound below: CO₂

Determine the oxidation state of the metal below: Fe₂O₃

Utilizing the half-cell potential information provided in Table 10.1, what can you say about the following two half reactions? Br_2(l) + 2e^-  2 Br ^-_(aq)Potential = 1.09 V F_2(g) + 2e^-  2 F ^-_(aq)Potential = 2.87 V