Question 1

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient of Zn(s) ? Zn(s)  + ReO4−(aq)  → Re(s)  + Zn2+(aq)  (acidic solution)

Accepted Answer

A)  2
B)  7
C)  8
D)  16
E)  None of these choices is correct.F) A) and E)
G) C) and D) B

Question 2

Consider the following balanced redox reaction.3CuO(s)  + 2NH3(aq)  → N2(g)  + 3H2O(l)  + 3Cu(s)  Which of the following statements is ?

Accepted Answer

A)  CuO(s)  is the oxidizing agent and copper is reduced.
B)  CuO(s)  is the oxidizing agent and copper is oxidized.
C)  CuO(s)  is the reducing agent and copper is oxidized.
D)  CuO(s)  is the reducing agent and copper is reduced.
E)  CuO(s)  is the oxidizing agent and N2(g)  is the reducing agent.F) A) and C)
G) C) and E) A

Question 3

Which electrochemical cell pictured below corresponds to the following cell diagram? 
Cr(s)  | Cr3+(aq, 1.0 M)  || Sn2+(aq, 1.0 M)  | Sn(s)

Accepted Answer

A)   3+(aq, 1.0 M)  || Sn2+(aq, 1.0 M)  | Sn(s)  
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B)   3+(aq, 1.0 M)  || Sn2+(aq, 1.0 M)  | Sn(s)  
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C)   3+(aq, 1.0 M)  || Sn2+(aq, 1.0 M)  | Sn(s)  
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E)   3+(aq, 1.0 M)  || Sn2+(aq, 1.0 M)  | Sn(s)  
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G) C) and E)

Question 4

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 E)
G) All of the above

Question 5

Which element is associated with the term "galvanized"?

Accepted Answer

A)  Ga
B)  Zn
C)  Cd
D)  Hg
E)  PbF) A) and B)
G) A) and C)

Question 6

Complete and balance the following redox equation.When properly balanced using the smallest whole-number coefficients, the coefficient of S is H2S + HNO3 → S + NO + H2O (acidic solution)

Accepted Answer

A)  1.
B)  2.
C)  3.
D)  5.
E)  6.F) All of the above
G) A) and B)

Question 7

A voltaic cell is prepared using copper and silver.Its cell notation is shown below.Cu(s)  | Cu2+(aq)  || Ag+(aq)  | Ag(s)  Which reaction occurs at the cathode?

Accepted Answer

A)  Cu(s)  → Cu2+(aq)  + 2e−
B)  Cu2+(aq)  + 2e−→ Cu(s) 
C)  Ag(s)  → Ag+(aq)  + e−
D)  Ag+(aq)  + e− → Ag(s) 
E)  Cu(s)  + 2Ag+(aq)  → Cu2+(aq)  + 2Ag(s) F) C) and D)
G) D) and E) D

Question 8

Consider the reaction CuO(s)  + H2(g)  → Cu(s)  + H2O(l) 
In this reaction, which substances are the oxidizing agent and reducing agent, respectively?

Accepted Answer

A)  CuO and H2
B)  H2 and CuO
C)  CuO and Cu
D)  H2O and H2
E)  Cu and H2OF) C) and E)
G) A) and E)

Question 9

Which is not a redox reaction?

Accepted Answer

A)  Al(OH) 4−(aq)  + 4H+(aq)  → Al3+(aq)  + 4H2O(l) 
B)  C6H12O6(s)  + 6O2(g)  → 6CO2(g)  + 6H2O(l) 
C)  Na6FeCl8(s)  + 2Na(l)  → 8NaCl(s)  + Fe(s) 
D)  2H2O2(aq)  → 2H2O(l)  + O2(g) 
E)  CO2(g)  + H2(g)  → CO(g)  + H2O(g) F) All of the above
G) B) and C)

Question 10

Complete and balance the following redox equation using the set of smallest whole numbers coefficients.What is the sum of the coefficients? HI + HNO3 → I2 + NO (acidic solution)

Accepted Answer

A)  5
B)  7
C)  14
D)  17
E)  None of these choices is correct.F) A) and D)
G) A) and E)

Question 11

When the following redox equation is balanced with the smallest whole number coefficients, the coefficient for the hydrogen sulfate ion will be ______. Al(s)  + HSO4−(aq)  + OH−(aq)  → Al2O3(s)  + S2−(aq)  + H2O(l)

Accepted Answer

A)  1
B)  3
C)  4
D)  6
E)  8F) D) and E)
G) A) and E)

Question 12

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) B) and E)
G) A) and B)

Question 13

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) None of the above
G) B) and C)

Question 14

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) All of the above
G) A) and C)

Question 15

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient for nitrogen dioxide? I2(s)  + HNO3(aq)  → HIO3(aq)  + NO2(g)  + H2O(l)

Accepted Answer

A)  1
B)  2
C)  4
D)  5
E)  10F) A) and E)
G) B) and E)

Question 16

Which is the half-reaction at the anode in a lead storage battery?

Accepted Answer

A)  Pb(s)  + PbO2(s)  + 4H+(aq)  + 2SO42−(aq)  → 2PbSO4(s)  + 2H2O(l) 
B)  PbO2(s)  + 4H+(aq)  + 2SO42−(aq)  + 2e− → PbSO4(s)  + 2H2O(l) 
C)  Pb(s)  + SO42-(aq)  → PbSO4(s)  + 2e−
D)  Pb(s)  → Pb(s)  + 2e−
E)  H2(g)  → 2H+(aq)  + 2e−F) D) and E)
G) C) and D)

Question 17

Which is the half-reaction at the cathode in a lead storage battery?

Accepted Answer

A)  Pb(s) + PbO2(s)  + 4H+(aq)  + 2SO42-(aq)  → 2PbSO4(s)  + 2H2O(l) 
B)  PbO2(s)  + 4H+(aq)  + 2SO42−(aq)  + 2e− → PbSO4(s)  + 2H2O(l) 
C)  Pb(s)  + SO42−(aq)  → PbSO4(s)  + 2e−
D)  Pb(s)  → Pb(s)  + 2e−
E)  H2(g)  → 2H+(aq)  + 2e−F) B) and D)
G) A) and D)

Question 18

A certain electrochemical cell has for its cell reaction: Zn + HgO → ZnO + Hg
Which is the half-reaction occurring at the anode?

Accepted Answer

A)  HgO + 2e− → Hg + O2−
B)  Zn2++ 2e− → Zn
C)  Zn → Zn2+ + 2e−
D)  ZnO + 2e− → ZnE) B) and C)
F) A) and C)

Question 19

Consider the following redox equation. Mn(OH) 2(s)  + MnO4−(aq)  → MnO42−(aq)  (basic solution) 
When the equation is balanced with the smallest whole number coefficients, what is the coefficient for OH−(aq)  and on which side of the equation is OH−(aq)  present?

Accepted Answer

A)  4, reactant side
B)  4, product side
C)  6, reactant side
D)  6, product side
E)  8, reactant sideF) A) and B)
G) C) and E)

Question 20

Based on the following electrochemical cell, which statement is ? 3+(aq)  + 3e- → −1) 66 Al(s)  Cd2+(aq)  + 2e- → −0) 40 Cd(s)  A) Al(s)  is oxidized and is the anode. B) Al(s)  is oxidized and is the cathode. C) Cd(s)  is oxidized and is the anode. D) Cd(s)  is oxidized and is the cathode. E) No reaction occurs because E°cell  Half-Reaction E° (V)  Al3+(aq)  + 3e- →
−1) 66
Al(s) 
Cd2+(aq)  + 2e- →
−0) 40
Cd(s)

Accepted Answer

A)  Al(s)  is oxidized and is the anode.
B)  Al(s)  is oxidized and is the cathode.
C)  Cd(s)  is oxidized and is the anode.
D)  Cd(s)  is oxidized and is the cathode.
E)  No reaction occurs because E°cell < 0.F) A) and E)
G) B) and C)

Exam 17: Electrochemistry

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient of Zn(s) ? Zn(s) + ReO₄⁻(aq) → Re(s) + Zn²⁺(aq) (acidic solution)

Correct Answer
verified
B

Consider the following balanced redox reaction.3CuO(s) + 2NH₃(aq) → N₂(g) + 3H₂O(l) + 3Cu(s) Which of the following statements is ?

Correct Answer
verified
A

Which electrochemical cell pictured below corresponds to the following cell diagram? Cr(s) | Cr³⁺(aq, 1.0 M) || Sn²⁺(aq, 1.0 M) | Sn(s)

Correct Answer
verified

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 Answer
verified

Which element is associated with the term "galvanized"?

Correct Answer
verified

Complete and balance the following redox equation.When properly balanced using the smallest whole-number coefficients, the coefficient of S is H₂S + HNO₃ → S + NO + H₂O (acidic solution)

Correct Answer
verified

A voltaic cell is prepared using copper and silver.Its cell notation is shown below.Cu(s) | Cu²⁺(aq) || Ag⁺(aq) | Ag(s) Which reaction occurs at the cathode?

Correct Answer
verified
D

Consider the reaction CuO(s) + H₂(g) → Cu(s) + H₂O(l) In this reaction, which substances are the oxidizing agent and reducing agent, respectively?

Correct Answer
verified

Which is not a redox reaction?

Correct Answer
verified

Complete and balance the following redox equation using the set of smallest whole numbers coefficients.What is the sum of the coefficients? HI + HNO₃ → I₂ + NO (acidic solution)

Correct Answer
verified

When the following redox equation is balanced with the smallest whole number coefficients, the coefficient for the hydrogen sulfate ion will be ______. Al(s) + HSO₄⁻(aq) + OH⁻(aq) → Al₂O₃(s) + S²⁻(aq) + H₂O(l)

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

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

Correct Answer
verified

Correct Answer
verified

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient for nitrogen dioxide? I₂(s) + HNO₃(aq) → HIO₃(aq) + NO₂(g) + H₂O(l)

Correct Answer
verified

Which is the half-reaction at the anode in a lead storage battery?

Correct Answer
verified

Which is the half-reaction at the cathode in a lead storage battery?

Correct Answer
verified

A certain electrochemical cell has for its cell reaction: Zn + HgO → ZnO + Hg Which is the half-reaction occurring at the anode?

Correct Answer
verified

Consider the following redox equation. Mn(OH) ₂(s) + MnO₄⁻(aq) → MnO₄²⁻(aq) (basic solution) When the equation is balanced with the smallest whole number coefficients, what is the coefficient for OH⁻(aq) and on which side of the equation is OH⁻(aq) present?

Correct Answer
verified

Based on the following electrochemical cell, which statement is ? Half-Reaction E° (V) Al³⁺(aq) + 3e^- → −1) 66 Al(s) Cd²⁺(aq) + 2e^- → −0) 40 Cd(s)

Correct Answer
verified

Exam 17: Electrochemistry

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient of Zn(s) ? Zn(s) + ReO4−(aq) → Re(s) + Zn2+(aq) (acidic solution)

Correct AnswerverifiedB

Consider the following balanced redox reaction.3CuO(s) + 2NH3(aq) → N2(g) + 3H2O(l) + 3Cu(s) Which of the following statements is ?

Correct AnswerverifiedA

Which electrochemical cell pictured below corresponds to the following cell diagram? Cr(s) | Cr3+(aq, 1.0 M) || Sn2+(aq, 1.0 M) | Sn(s)

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) 62−(aq) + Bi(s) (basic solution)

Correct AnswerverifiedShow Answer

Which element is associated with the term "galvanized"?

Correct AnswerverifiedShow Answer

Complete and balance the following redox equation.When properly balanced using the smallest whole-number coefficients, the coefficient of S is H2S + HNO3 → S + NO + H2O (acidic solution)

Correct AnswerverifiedShow Answer

A voltaic cell is prepared using copper and silver.Its cell notation is shown below.Cu(s) | Cu2+(aq) || Ag+(aq) | Ag(s) Which reaction occurs at the cathode?

Correct AnswerverifiedD

Consider the reaction CuO(s) + H2(g) → Cu(s) + H2O(l) In this reaction, which substances are the oxidizing agent and reducing agent, respectively?

Correct AnswerverifiedShow Answer

Which is not a redox reaction?

Correct AnswerverifiedShow Answer

Complete and balance the following redox equation using the set of smallest whole numbers coefficients.What is the sum of the coefficients? HI + HNO3 → I2 + NO (acidic solution)

Correct AnswerverifiedShow Answer

When the following redox equation is balanced with the smallest whole number coefficients, the coefficient for the hydrogen sulfate ion will be ______. Al(s) + HSO4−(aq) + OH−(aq) → Al2O3(s) + S2−(aq) + H2O(l)

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

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

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient for nitrogen dioxide? I2(s) + HNO3(aq) → HIO3(aq) + NO2(g) + H2O(l)

Correct AnswerverifiedShow Answer

Which is the half-reaction at the anode in a lead storage battery?

Correct AnswerverifiedShow Answer

Which is the half-reaction at the cathode in a lead storage battery?

Correct AnswerverifiedShow Answer

A certain electrochemical cell has for its cell reaction: Zn + HgO → ZnO + Hg Which is the half-reaction occurring at the anode?

Correct AnswerverifiedShow Answer

Consider the following redox equation. Mn(OH) 2(s) + MnO4−(aq) → MnO42−(aq) (basic solution) When the equation is balanced with the smallest whole number coefficients, what is the coefficient for OH−(aq) and on which side of the equation is OH−(aq) present?

Correct AnswerverifiedShow Answer

Based on the following electrochemical cell, which statement is ? Half-Reaction E° (V) Al3+(aq) + 3e- → −1) 66 Al(s) Cd2+(aq) + 2e- → −0) 40 Cd(s)

Correct AnswerverifiedShow Answer

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient of Zn(s) ? Zn(s) + ReO₄⁻(aq) → Re(s) + Zn²⁺(aq) (acidic solution)

Correct Answer
verified
B

Consider the following balanced redox reaction.3CuO(s) + 2NH₃(aq) → N₂(g) + 3H₂O(l) + 3Cu(s) Which of the following statements is ?

Correct Answer
verified
A

Which electrochemical cell pictured below corresponds to the following cell diagram? Cr(s) | Cr³⁺(aq, 1.0 M) || Sn²⁺(aq, 1.0 M) | Sn(s)

Correct Answer
verified

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 Answer
verified

Correct Answer
verified

Complete and balance the following redox equation.When properly balanced using the smallest whole-number coefficients, the coefficient of S is H₂S + HNO₃ → S + NO + H₂O (acidic solution)

Correct Answer
verified

A voltaic cell is prepared using copper and silver.Its cell notation is shown below.Cu(s) | Cu²⁺(aq) || Ag⁺(aq) | Ag(s) Which reaction occurs at the cathode?

Correct Answer
verified
D

Consider the reaction CuO(s) + H₂(g) → Cu(s) + H₂O(l) In this reaction, which substances are the oxidizing agent and reducing agent, respectively?

Correct Answer
verified

Correct Answer
verified

Complete and balance the following redox equation using the set of smallest whole numbers coefficients.What is the sum of the coefficients? HI + HNO₃ → I₂ + NO (acidic solution)

Correct Answer
verified

When the following redox equation is balanced with the smallest whole number coefficients, the coefficient for the hydrogen sulfate ion will be ______. Al(s) + HSO₄⁻(aq) + OH⁻(aq) → Al₂O₃(s) + S²⁻(aq) + H₂O(l)

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

Correct Answer
verified

When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient for nitrogen dioxide? I₂(s) + HNO₃(aq) → HIO₃(aq) + NO₂(g) + H₂O(l)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Consider the following redox equation. Mn(OH) ₂(s) + MnO₄⁻(aq) → MnO₄²⁻(aq) (basic solution) When the equation is balanced with the smallest whole number coefficients, what is the coefficient for OH⁻(aq) and on which side of the equation is OH⁻(aq) present?

Correct Answer
verified

Based on the following electrochemical cell, which statement is ? Half-Reaction E° (V) Al³⁺(aq) + 3e^- → −1) 66 Al(s) Cd²⁺(aq) + 2e^- → −0) 40 Cd(s)

Correct Answer
verified