Question 1

Which of the following elements can be isolated by electrolysis of the aqueous salt shown?

Accepted Answer

A)   Phosphorus from K3PO4(aq) 
B)   Sodium from NaBr(aq) 
C)   Aluminum from AlCl3(aq) 
D)   Fluorine from KF(aq) 
E)   Iodine from NaI(aq) F) All of the above
G) A) and B)

Question 2

What mass of Cu may be deposited from a Cu2+ solution during electrolysis by a current of 3.00 A for 10.0 hours?

Accepted Answer

A)   63.6 g Cu
B)   35.6 g Cu
C)   6.4 g Cu
D)   3.6 g Cu
E)   71.2 g CuF) A) and D)
G) A) and C)

Question 3

Which is the correct cell notation for the following reaction? Au3+(aq)  + Al(s)  → Al3+(aq)  + Au(s)

Accepted Answer

A)   Al3+(aq) |Al(s) ||Au3+(aq) |Au(s) 
B)   Al(s) |Al3+(aq) ||Au3+(aq) |Au(s) 
C)   Al3+(aq) |Au3+(aq) ||Al(s) |Au(s) 
D)   Al3+(aq) |Au(s) ||Au3+(aq) |Al(s) 
E)   Au(s) |Al(s) ||Au3+(aq) |Al3+(aq) F) A) and D)
G) D) and E)

Question 4

Two cells are connected in series, so that the same current flows through two electrodes, where the following half-reactions occur: Cu2+(aq)  + 2e- → Cu(s)  and Ag+(aq)  + e- → Ag(s) 
For every 1.00 g of copper produced in the first process, how many grams of silver will be produced in the second one?

Accepted Answer

A)   0.294 g Ag
B)   0.588 g Ag
C)   0.850 g Ag
D)   1.70 g Ag
E)   3.40 g AgF) A) and E)
G) A) and B)

Question 5

What is the name given to the apparatus where reduction occurs in a cell where electricity flows?

Accepted Answer

A)   Cathode
B)   Electrode
C)   Galvanic cell
D)   Anode
E)   Voltaic cellF) A) and B)
G) A) and C)

Question 6

A voltaic cell prepared using aluminum and nickel has the following cell notation. Al(s)  | Al3+(aq)  || Ni2+(aq)  | Ni(s) 
Which reaction occurs at the anode?

Accepted Answer

A)   Al(s)  → Al3+(aq)  + 3e-
B)   Al3+(aq)  + 3e- → Al(s) 
C)   Ni(s)  → Ni2+(aq)  + 2e-
D)   Ni2+(aq)  + 2e- → Ni(s) 
E)   Ni(s)  + Ni2+(aq)  → Al(s)  + Al3+(aq) F) None of the above
G) All of the above

Question 7

Aluminum does not corrode in the same manner as iron does, because

Accepted Answer

A)   aluminum does not react with oxygen gas.
B)   a protective layer of aluminum oxide forms on the metal surface.
C)   aluminum is harder to oxidize than iron.
D)   iron gives cathodic protection to aluminum.
E)   the electrical circuit cannot be completed on an aluminum surface.F) A) and B)
G) A) and C)

Question 8

What is the oxidizing agent in the (unbalanced)  reaction? Cu(s)  + H+(aq)  + NO3-(aq)  → NO(g)  + H2O(l)  + Cu2+(aq)

Accepted Answer

A)   Cu
B)   H+
C)   (NO3-) 
D)   NO
E)   Cu2+F) A) and C)
G) C) and D)

Question 9

What is the name given to the apparatus that connects the two solutions by a conducting medium through which the cations and anions can move from one half-cell to the other?

Accepted Answer

A)   Cathode
B)   Electrode
C)   Galvanic cell
D)   Salt bridge
E)   Fuel cellF) A) and E)
G) C) and E)

Question 10

Complete and balance the following redox equation. Now sum the coefficients of all species in the balanced equation. (Remember to add the coefficients that are equal to one, and to add the coefficients of any species added to the equation.)  The sum of the smallest whole number coefficients is Bi(OH) 3 + SnO22- → Bi + SnO32- (basic solution)

Accepted Answer

A)   32
B)   25
C)   16
D)   13
E)   4F) D) and E)
G) A) and E)

Question 11

________ is a process used to coat iron in order to protect it from corrosion.

Accepted Answer

Galvanizat...

Question 12

A galvanic cell is constructed using the two hypothetical half-reactions  a. Calculate the standard potential of this cell, E°cell .
b. Calculate ΔG° for the cell reaction.(1 faraday = 96,500 C)

Accepted Answer

a. 2.00 V
...

Question 13

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient of Sn(OH) 3-? Bi(OH) 3(s)  + Sn(OH) 3-(aq)  → Sn(OH) 62-(aq)  + Bi(s)  (basic solution)

Accepted Answer

A)   1
B)   2
C)   3
D)   6
E)   12F) B) and D)
G) A) and D)

Question 14

Based on the data presented below, which is the strongest oxidizing agent? 4]2-(aq)  B)  RuO4(s)  C)  HFeO4-(aq)  D)  H4XeO6(aq)  E)  Cl-(aq) " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   [PtCl4]2-(aq) 
B)   RuO4(s) 
C)   HFeO4-(aq) 
D)   H4XeO6(aq) 
E)   Cl-(aq) F) B) and E)
G) C) and D)

Question 15

________ - ________ fuel cells provide electrical power and drinking water for space flights.

Accepted Answer

The answer of ________ - ________ fuel cells provide electrical...

Question 16

What is E°cell for the following reaction? 2 Ag(s)  + Sn2+(aq)  → 2 Ag+(aq)  + Sn(s)  cell for the following reaction? 2 Ag(s)  + Sn2+(aq)  → 2 Ag+(aq)  + Sn(s)    A)  +0.94 V B)  -0.94 V C)  +0.67 V D)  -0.67 V E)  +1.34 V" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   +0.94 V
B)   -0.94 V
C)   +0.67 V
D)   -0.67 V
E)   +1.34 VF) All of the above
G) C) and D)

Question 17

Which, if any, of the following metals would be capable of acting as a sacrificial anode when used with iron pipe?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) B) and C)
G) B) and D)

Question 18

Which of the following elements could be prepared by electrolysis of the aqueous solution shown?

Accepted Answer

A)   Sodium from Na3PO4(aq) 
B)   Sulfur from K2SO4(aq) 
C)   Oxygen from H2SO4(aq) 
D)   Potassium from KCl(aq) 
E)   Nitrogen from AgNO3(aq) F) B) and E)
G) B) and D)

Question 19

The equilibrium constant for the reaction of Ni2+ with Cd is 1.17 x 105. Calculate the free energy change for the reaction at 25oC.

Accepted Answer

A)   -12.6 kJ
B)   -28.9 kJ
C)   2.43 kJ
D)   28.9 kJ
E)   12.6 kJF) C) and E)
G) C) and D)

Question 20

What mass of copper can be deposited by the passage of 12.0 A for 25.0 min through a solution of copper(II)  sulfate? [1 C = 1 A•s; F = 96,500 C]

Accepted Answer

A)   5.93 g
B)   3.95 g
C)   1.97 g
D)   11.85 g
E)   29.6 gF) All of the above
G) A) and C)

Exam 19: Electrochemistry

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient of Sn(OH) ₃^-? Bi(OH) ₃(s) + Sn(OH) ₃^-(aq) → Sn(OH) ₆^2-(aq) + Bi(s) (basic solution)

Correct Answer
verified

What mass of copper can be deposited by the passage of 12.0 A for 25.0 min through a solution of copper(II) sulfate? [1 C = 1 A•s; F = 96,500 C]

Correct Answer
verified

Which, if any, of the following metals would be capable of acting as a sacrificial anode when used with iron pipe?

Correct Answer
verified

A voltaic cell prepared using aluminum and nickel has the following cell notation. Al(s) | Al³⁺(aq) || Ni²⁺(aq) | Ni(s) Which reaction occurs at the anode?

Correct Answer
verified

Which of the following elements can be isolated by electrolysis of the aqueous salt shown?

Correct Answer
verified

- fuel cells provide electrical power and drinking water for space flights.

Correct Answer
verified

What is the name given to the apparatus that connects the two solutions by a conducting medium through which the cations and anions can move from one half-cell to the other?

Correct Answer
verified

What is the oxidizing agent in the (unbalanced) reaction? Cu(s) + H⁺(aq) + NO₃^-(aq) → NO(g) + H₂O(l) + Cu²⁺(aq)

Correct Answer
verified

Based on the data presented below, which is the strongest oxidizing agent?

Correct Answer
verified

Aluminum does not corrode in the same manner as iron does, because

Correct Answer
verified

Which of the following elements could be prepared by electrolysis of the aqueous solution shown?

Correct Answer
verified

Which is the correct cell notation for the following reaction? Au³⁺(aq) + Al(s) → Al³⁺(aq) + Au(s)

Correct Answer
verified

Correct Answer
verified

A galvanic cell is constructed using the two hypothetical half-reactions a. Calculate the standard potential of this cell, E°_{cell .} b. Calculate ΔG° for the cell reaction.(1 faraday = 96,500 C)

Correct Answer
verified
a. 2.00 V
...
View Answer

Correct Answer
verified

What is the name given to the apparatus where reduction occurs in a cell where electricity flows?

Correct Answer
verified

The equilibrium constant for the reaction of Ni²⁺ with Cd is 1.17 x 10⁵. Calculate the free energy change for the reaction at 25^oC.

Correct Answer
verified

What is E°_cell for the following reaction? 2 Ag(s) + Sn²⁺(aq) → 2 Ag⁺(aq) + Sn(s)

Correct Answer
verified

________ is a process used to coat iron in order to protect it from corrosion.

Correct Answer
verified
Galvanizat...
View Answer

What mass of Cu may be deposited from a Cu²⁺ solution during electrolysis by a current of 3.00 A for 10.0 hours?

Correct Answer
verified

Exam 19: Electrochemistry

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient of Sn(OH) 3-? Bi(OH) 3(s) + Sn(OH) 3-(aq) → Sn(OH) 62-(aq) + Bi(s) (basic solution)

Correct AnswerverifiedShow Answer

What mass of copper can be deposited by the passage of 12.0 A for 25.0 min through a solution of copper(II) sulfate? [1 C = 1 A•s; F = 96,500 C]

Correct AnswerverifiedShow Answer

Which, if any, of the following metals would be capable of acting as a sacrificial anode when used with iron pipe?

Correct AnswerverifiedShow Answer

A voltaic cell prepared using aluminum and nickel has the following cell notation. Al(s) | Al3+(aq) || Ni2+(aq) | Ni(s) Which reaction occurs at the anode?

Correct AnswerverifiedShow Answer

Which of the following elements can be isolated by electrolysis of the aqueous salt shown?

Correct AnswerverifiedShow Answer

________ - ________ fuel cells provide electrical power and drinking water for space flights.

Correct AnswerverifiedShow Answer

What is the name given to the apparatus that connects the two solutions by a conducting medium through which the cations and anions can move from one half-cell to the other?

Correct AnswerverifiedShow Answer

What is the oxidizing agent in the (unbalanced) reaction? Cu(s) + H+(aq) + NO3-(aq) → NO(g) + H2O(l) + Cu2+(aq)

Correct AnswerverifiedShow Answer

Based on the data presented below, which is the strongest oxidizing agent?

Correct AnswerverifiedShow Answer

Aluminum does not corrode in the same manner as iron does, because

Correct AnswerverifiedShow Answer

Which of the following elements could be prepared by electrolysis of the aqueous solution shown?

Correct AnswerverifiedShow Answer

Which is the correct cell notation for the following reaction? Au3+(aq) + Al(s) → Al3+(aq) + Au(s)

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A galvanic cell is constructed using the two hypothetical half-reactions a. Calculate the standard potential of this cell, E°cell . b. Calculate ΔG° for the cell reaction.(1 faraday = 96,500 C)

Correct Answerverifieda. 2.00 V...View AnswerShow Answer

Correct AnswerverifiedShow Answer

What is the name given to the apparatus where reduction occurs in a cell where electricity flows?

Correct AnswerverifiedShow Answer

The equilibrium constant for the reaction of Ni2+ with Cd is 1.17 x 105. Calculate the free energy change for the reaction at 25oC.

Correct AnswerverifiedShow Answer

What is E°cell for the following reaction? 2 Ag(s) + Sn2+(aq) → 2 Ag+(aq) + Sn(s)

Correct AnswerverifiedShow Answer

________ is a process used to coat iron in order to protect it from corrosion.

Correct AnswerverifiedGalvanizat...View AnswerShow Answer

What mass of Cu may be deposited from a Cu2+ solution during electrolysis by a current of 3.00 A for 10.0 hours?

Correct AnswerverifiedShow Answer

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient of Sn(OH) ₃^-? Bi(OH) ₃(s) + Sn(OH) ₃^-(aq) → Sn(OH) ₆^2-(aq) + Bi(s) (basic solution)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

A voltaic cell prepared using aluminum and nickel has the following cell notation. Al(s) | Al³⁺(aq) || Ni²⁺(aq) | Ni(s) Which reaction occurs at the anode?

Correct Answer
verified

Correct Answer
verified

- fuel cells provide electrical power and drinking water for space flights.

Correct Answer
verified

Correct Answer
verified

What is the oxidizing agent in the (unbalanced) reaction? Cu(s) + H⁺(aq) + NO₃^-(aq) → NO(g) + H₂O(l) + Cu²⁺(aq)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Which is the correct cell notation for the following reaction? Au³⁺(aq) + Al(s) → Al³⁺(aq) + Au(s)

Correct Answer
verified

Correct Answer
verified

A galvanic cell is constructed using the two hypothetical half-reactions a. Calculate the standard potential of this cell, E°_{cell .} b. Calculate ΔG° for the cell reaction.(1 faraday = 96,500 C)

Correct Answer
verified
a. 2.00 V
...
View Answer

Correct Answer
verified

Correct Answer
verified

The equilibrium constant for the reaction of Ni²⁺ with Cd is 1.17 x 10⁵. Calculate the free energy change for the reaction at 25^oC.

Correct Answer
verified

What is E°_cell for the following reaction? 2 Ag(s) + Sn²⁺(aq) → 2 Ag⁺(aq) + Sn(s)

Correct Answer
verified

Correct Answer
verified
Galvanizat...
View Answer

What mass of Cu may be deposited from a Cu²⁺ solution during electrolysis by a current of 3.00 A for 10.0 hours?

Correct Answer
verified