Question 1

Answer the following questions for a galvanic cell that employs the reaction
2Na(l) + S(l) $\rightarrow$NaS1U1B12S1U1B0S(s)
-What element serves as the anode?

Accepted Answer

The answer of Answer the following questions for a galvanic...

Question 2

What is the oxidation state of carbon in Fe2(CO3) 3?

Accepted Answer

A)   +4
B)   +3
C)   +2
D)   0
E)   -2F) A) and B)
G) C) and E)

Question 3

The oxidation state of nitrogen in NH4Cl is

Accepted Answer

A)   +1
B)   +3
C)   -3
D)   -4
E)   -2F) B) and C)
G) D) and E)

Question 4

What is the oxidation state of Cr in Cr2O72-?

Accepted Answer

A)   +12
B)   +6
C)   +3
D)   0
E)   -2F) A) and E)
G) D) and E)

Question 5

Which of the following are oxidation-reduction reactions? I. PCl3 + Cl2  →\rightarrow→ PCl5
II)  Cu + 2AgNO3  →\rightarrow→ Cu(NO3) 2 + 2Ag
III)  CO2 + 2LiOH  →\rightarrow→ Li2CO3 + H2O
IV)  FeCl2 + 2NaOH  →\rightarrow→ Fe(OH) 2 + 2NaCl

Accepted Answer

A)   III
B)   IV
C)   I and II
D)   I, II, and III
E)   I, II, III, and IV F) A) and B)
G) A) and C)

Question 6

Which of the following is true for a galvanic cell based on the following reaction? Zn(s)  + Cu2+(aq)   →\rightarrow→ Zn2+(aq)  + Cu(s)

Accepted Answer

A)   The zinc is being reduced.
B)   The zinc serves as the anode.
C)   The Cu2+ ion is being reduced.
D)   The Cu serves as the anode.
E)   two of these F) A) and B)
G) C) and E)

Question 7

Which statement is true of the following reaction? 2K + CuCl2  →\rightarrow→  2KCl + Cu

Accepted Answer

A)   Copper is reduced.
B)   Chlorine is reduced.
C)   Potassium is reduced.
D)   Copper is oxidized.
E)   Chlorine is oxidized. F) B) and D)
G) D) and E)

Question 8

The following reaction occurs in aqueous acid solution: NO3- + I-  →\rightarrow→  IO3- + NO2
In the balanced equation, the coefficient of water is

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5 F) B) and C)
G) A) and E)

Question 9

In a car battery, which of the following is the electrolyte?

Accepted Answer

A)   Pb(s) 
B)   PbO2(s) 
C)   PbSO4(s) 
D)   H2SO4(aq) 
E)   none of theseF) B) and E)
G) A) and D)

Question 10

In a lead storage battery, PbO2 is found at the ______________.

Accepted Answer

A)   cathode
B)   anode
C)   dry cell
D)   galvanic cell
E)   none of theseF) A) and E)
G) C) and D)

Question 11

For the redox reaction 2Fe2+ + Cl2  →\rightarrow→ 2Fe3+ + 6Cl-, which of the following are the correct half-reactions? 
(I)  Cl2 + 2e- →\rightarrow→ 2Cl-
(II)  Cl  →\rightarrow→  Cl- + e-
(III)  Cl2  →\rightarrow→ 2Cl- + 2e-
(IV)  Fe2+  →\rightarrow→  Fe3+ + e-
(V)  Fe2+ + e-  →\rightarrow→ Fe3+

Accepted Answer

A)   I and IV
B)   I and V
C)   II and IV
D)   II and V
E)   III and IV F) D) and E)
G) A) and E)

Question 12

Answer the questions that refer to the following reaction:
TiCl4(l)  + O2(g)   →\rightarrow→  TiO2(s)  + 2Cl2(g) 
-Which species is the reducing agent?

Accepted Answer

A)   Ti
B)   Cl
C)   O
D)   TiCl4
E)   O2 F) A) and C)
G) D) and E)

Question 13

The oxidation state of carbon in CH4 is

Accepted Answer

A)   +4
B)   -4
C)   +2
D)   -2
E)   none of theseF) A) and B)
G) C) and D)

Question 14

In the balanced equation for the following redox equation, what is the sum of the coefficients? Fe3+ + I-  →\rightarrow→  Fe2+ + I2

Accepted Answer

A)   4
B)   5
C)   6
D)   7
E)   8 F) A) and B)
G) A) and C)

Question 15

The oxidation state of chlorine in MgCl2 is

Accepted Answer

A)   -1
B)   +1
C)   0
D)   -2
E)   +2F) B) and D)
G) C) and D)

Question 16

Answer the questions that refer to the following reaction:
TiCl4(l)  + O2(g)   →\rightarrow→  TiO2(s)  + 2Cl2(g) 
-Which species is oxidized?

Accepted Answer

A)   Ti
B)   Cl
C)   O
D)   TiO2
E)   O2 F) A) and E)
G) C) and D)

Question 17

In the reaction Mg + H2SO4  →\rightarrow→  MgSO4 + H2, which element, if any, is oxidized?

Accepted Answer

A)   magnesium
B)   hydrogen
C)   sulfur
D)   oxygen
E)   None is oxidized. F) A) and D)
G) C) and D)

Question 18

Aluminum resists corrosion in air because aluminum metal gains electrons rather than losing electrons.

Accepted Answer

A) True 
 B)False

Question 19

In a galvanic cell that employs the reaction
Pb(s) + 2H2SO4(aq) + PbO2(s) $\rightarrow$ 2PbSO4(s) + 2H2O(l)
lead metal serves as the cathode.

Accepted Answer

A) True 
 B)False

Question 20

Balance the following reaction that takes place in acidic solution:
Mn(s) + NO3-(aq)$\rightarrow$Mn2+(aq) + NO2(g)

Accepted Answer

Mn(s) + 4H⁺(aq) + 2...

Exam 18: Oxidation-Reduction Reactions and Electrochemistry

In a galvanic cell that employs the reaction Pb(s) + 2H₂SO₄(aq) + PbO₂(s) $\rightarrow$ 2PbSO₄(s) + 2H₂O(l) lead metal serves as the cathode.

Correct Answer
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Balance the following reaction that takes place in acidic solution: Mn(s) + NO₃^-(aq) $\rightarrow$ Mn²⁺(aq) + NO₂(g)

Correct Answer
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Mn(s) + 4H⁺(aq) + 2...
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In a car battery, which of the following is the electrolyte?

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Which of the following is true for a galvanic cell based on the following reaction? Zn(s) + Cu²⁺(aq) $\rightarrow$ Zn²⁺(aq) + Cu(s)

Correct Answer
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Answer the following questions for a galvanic cell that employs the reaction 2Na(l) + S(l) $\rightarrow$ Na₂S(s) -What element serves as the anode?

Correct Answer
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The oxidation state of chlorine in MgCl₂ is

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Answer the questions that refer to the following reaction: TiCl₄(l) + O₂(g) $\rightarrow$ TiO₂(s) + 2Cl₂(g) -Which species is the reducing agent?

Correct Answer
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The oxidation state of carbon in CH₄ is

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Which statement is true of the following reaction? 2K + CuCl₂ $\rightarrow$ 2KCl + Cu

Correct Answer
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Aluminum resists corrosion in air because aluminum metal gains electrons rather than losing electrons.

Correct Answer
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What is the oxidation state of carbon in Fe₂(CO₃) ₃?

Correct Answer
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In a lead storage battery, PbO₂ is found at the ______________.

Correct Answer
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In the reaction Mg + H₂SO₄ $\rightarrow$ MgSO₄ + H₂, which element, if any, is oxidized?

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Which of the following are oxidation-reduction reactions? I. PCl₃ + Cl₂ $\rightarrow$ PCl₅ II) Cu + 2AgNO₃ $\rightarrow$ Cu(NO₃) ₂ + 2Ag III) CO₂ + 2LiOH $\rightarrow$ Li₂CO₃ + H₂O IV) FeCl₂ + 2NaOH $\rightarrow$ Fe(OH) ₂ + 2NaCl

Correct Answer
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In the balanced equation for the following redox equation, what is the sum of the coefficients? Fe³⁺ + I^- $\rightarrow$ Fe²⁺ + I₂

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The oxidation state of nitrogen in NH₄Cl is

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Answer the questions that refer to the following reaction: TiCl₄(l) + O₂(g) $\rightarrow$ TiO₂(s) + 2Cl₂(g) -Which species is oxidized?

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What is the oxidation state of Cr in Cr₂O₇²^-?

Correct Answer
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The following reaction occurs in aqueous acid solution: NO₃^- + I^- $\rightarrow$ IO₃^- + NO₂ In the balanced equation, the coefficient of water is

Correct Answer
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Exam 18: Oxidation-Reduction Reactions and Electrochemistry

In a galvanic cell that employs the reaction Pb(s) + 2H2SO4(aq) + PbO2(s) →\rightarrow→ 2PbSO4(s) + 2H2O(l) lead metal serves as the cathode.

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Balance the following reaction that takes place in acidic solution: Mn(s) + NO3-(aq) →\rightarrow→ Mn2+(aq) + NO2(g)

Correct AnswerverifiedMn(s) + 4H+(aq) + 2...View AnswerShow Answer

In a car battery, which of the following is the electrolyte?

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Which of the following is true for a galvanic cell based on the following reaction? Zn(s) + Cu2+(aq) →\rightarrow→ Zn2+(aq) + Cu(s)

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Answer the following questions for a galvanic cell that employs the reaction 2Na(l) + S(l) →\rightarrow→ Na2S(s) -What element serves as the anode?

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The oxidation state of chlorine in MgCl2 is

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Answer the questions that refer to the following reaction: TiCl4(l) + O2(g) →\rightarrow→ TiO2(s) + 2Cl2(g) -Which species is the reducing agent?

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The oxidation state of carbon in CH4 is

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Which statement is true of the following reaction? 2K + CuCl2 →\rightarrow→ 2KCl + Cu

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Aluminum resists corrosion in air because aluminum metal gains electrons rather than losing electrons.

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What is the oxidation state of carbon in Fe2(CO3) 3?

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In a lead storage battery, PbO2 is found at the ______________.

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In the reaction Mg + H2SO4 →\rightarrow→ MgSO4 + H2, which element, if any, is oxidized?

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Which of the following are oxidation-reduction reactions? I. PCl3 + Cl2 →\rightarrow→ PCl5 II) Cu + 2AgNO3 →\rightarrow→ Cu(NO3) 2 + 2Ag III) CO2 + 2LiOH →\rightarrow→ Li2CO3 + H2O IV) FeCl2 + 2NaOH →\rightarrow→ Fe(OH) 2 + 2NaCl

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In the balanced equation for the following redox equation, what is the sum of the coefficients? Fe3+ + I- →\rightarrow→ Fe2+ + I2

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The oxidation state of nitrogen in NH4Cl is

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Answer the questions that refer to the following reaction: TiCl4(l) + O2(g) →\rightarrow→ TiO2(s) + 2Cl2(g) -Which species is oxidized?

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What is the oxidation state of Cr in Cr2O72-?

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The following reaction occurs in aqueous acid solution: NO3- + I- →\rightarrow→ IO3- + NO2 In the balanced equation, the coefficient of water is

Correct AnswerverifiedShow Answer

In a galvanic cell that employs the reaction Pb(s) + 2H₂SO₄(aq) + PbO₂(s) $\rightarrow$ 2PbSO₄(s) + 2H₂O(l) lead metal serves as the cathode.

Correct Answer
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Balance the following reaction that takes place in acidic solution: Mn(s) + NO₃^-(aq) $\rightarrow$ Mn²⁺(aq) + NO₂(g)

Correct Answer
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Mn(s) + 4H⁺(aq) + 2...
View Answer

Correct Answer
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Which of the following is true for a galvanic cell based on the following reaction? Zn(s) + Cu²⁺(aq) $\rightarrow$ Zn²⁺(aq) + Cu(s)

Correct Answer
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Answer the following questions for a galvanic cell that employs the reaction 2Na(l) + S(l) $\rightarrow$ Na₂S(s) -What element serves as the anode?

Correct Answer
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Correct Answer
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The oxidation state of chlorine in MgCl₂ is

Correct Answer
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Answer the questions that refer to the following reaction: TiCl₄(l) + O₂(g) $\rightarrow$ TiO₂(s) + 2Cl₂(g) -Which species is the reducing agent?

Correct Answer
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The oxidation state of carbon in CH₄ is

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Which statement is true of the following reaction? 2K + CuCl₂ $\rightarrow$ 2KCl + Cu

Correct Answer
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Correct Answer
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What is the oxidation state of carbon in Fe₂(CO₃) ₃?

Correct Answer
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In a lead storage battery, PbO₂ is found at the ______________.

Correct Answer
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In the reaction Mg + H₂SO₄ $\rightarrow$ MgSO₄ + H₂, which element, if any, is oxidized?

Correct Answer
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Which of the following are oxidation-reduction reactions? I. PCl₃ + Cl₂ $\rightarrow$ PCl₅ II) Cu + 2AgNO₃ $\rightarrow$ Cu(NO₃) ₂ + 2Ag III) CO₂ + 2LiOH $\rightarrow$ Li₂CO₃ + H₂O IV) FeCl₂ + 2NaOH $\rightarrow$ Fe(OH) ₂ + 2NaCl

Correct Answer
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In the balanced equation for the following redox equation, what is the sum of the coefficients? Fe³⁺ + I^- $\rightarrow$ Fe²⁺ + I₂

Correct Answer
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The oxidation state of nitrogen in NH₄Cl is

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Answer the questions that refer to the following reaction: TiCl₄(l) + O₂(g) $\rightarrow$ TiO₂(s) + 2Cl₂(g) -Which species is oxidized?

Correct Answer
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What is the oxidation state of Cr in Cr₂O₇²^-?

Correct Answer
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The following reaction occurs in aqueous acid solution: NO₃^- + I^- $\rightarrow$ IO₃^- + NO₂ In the balanced equation, the coefficient of water is

Correct Answer
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