Chapter.8 Energy and Chemical Reactions Exam Questions - MCQ Test Bank | Introductory Chemistry - 2nd Edition by Burdge and Driessen by Julia Burdge, Michelle Driessen. DOCX document preview.
Student name:__________
MULTIPLE CHOICE - Choose the one alternative that best completes the statement or answers the question.
1)
When the following equation is balanced with the lowest whole number coefficients, the coefficients are: |
Cu(s) + H+(aq) + NO3−(aq) → NO(g) + H2O(l) + Cu2+(aq) |
A) 1, 2, 1, 1, 1, 1
B) 3, 2, 1, 1, 1, 3
C) 3, 2, 4, 2, 4, 3
D) 1, 8, 2, 2, 4, 1
E) 3, 8, 2, 2, 4, 3
2)
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) |
A) 1.
B) 2.
C) 3.
D) 5.
E) 6.
3)
When the following redox equation is balanced using the smallest whole-number coefficients, what is the coefficient of NO2? |
Sn + HNO3 → SnO2 + NO2 + H2O (acidic solution) |
A) 1
B) 2
C) 3
D) 4
E) 5
4) If a substance is reduced, it must undergo a
A) gain of electrons.
B) loss of oxygen.
C) gain of hydrogen.
D) loss of electrons.
E) gain of oxygen.
5) Which is not a redox reaction?
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)
6)
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) |
A) 2
B) 7
C) 8
D) 16
E) None of the answers is correct.
7)
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) |
A) 1
B) 2
C) 3
D) 6
E) 12
8)
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? |
A) 4, reactant side
B) 4, product side
C) 6, reactant side
D) 6, product side
E) 8, reactant side
9)
When the following redox equation is balanced with the smallest whole number coefficients, what is the coefficient of Sb3+(aq)? |
BrO3−(aq) + Sb3+(aq) → Br−(aq) + Sb5+(aq) (acidic solution) |
A) 1
B) 2
C) 3
D) 4
E) 6
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) |
A) 32.
B) 25.
C) 16.
D) 13.
E) 4.
11)
What is the oxidizing agent in the (unbalanced) reaction? |
Cu(s) + H+(aq) + NO3−(aq) → NO(g) + H2O(l) + Cu2+(aq) |
A) Cu
B) H +
C) NO3−
D) NO
E) Cu 2+
12)
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) |
A) 5
B) 7
C) 14
D) 17
E) None of the answers is correct.
13)
Consider the reaction |
CuO(s) + H2(g) → Cu(s) + H2O(l) |
In this reaction, which substances are the oxidizing agent and reducing agent, respectively? |
A) CuO and H 2
B) H2 and CuO
C) CuO and Cu
D) H2O and H2
E) Cu and H2O
14)
Consider the following balanced redox reaction: |
Mn2+(aq) + S2O82−(aq) + 2H2O(l) → MnO2(s) + 4H+(aq) + 2SO42−(aq) |
Which of the following statements is true? |
A) Mn2+(aq) is the oxidizing agent and is reduced.
B) Mn2+(aq) is the oxidizing agent and is oxidized.
C) Mn2+(aq) is the reducing agent and is oxidized.
D) Mn2+(aq) is the reducing agent and is reduced.
E) Manganese does not change its oxidation number in this reaction.
15)
Consider the following balanced redox reaction: |
3CuO(s) + 2NH3(aq) → N2(g) + 3H2O(l) + 3Cu(s) |
Which of the following statements is true? |
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.
16)
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) |
A) 1
B) 2
C) 4
D) 5
E) 10
17)
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) |
A) 1.
B) 3.
C) 4.
D) 6.
E) 8.
18) What is the name given to the experimental apparatus for generating electricity through the use of a spontaneous reaction?
A) electrolytic cell
B) galvanic cell
C) redox cell
D) cathode
E) anode
19) What is the purpose of a salt bridge in an electrochemical cell?
A) A salt bridge provides electrical contact between the electrodes that make up the cell.
B) A salt bridge carries electrons between the cathode and anode.
C) A salt bridge insulates the two electrodes.
D) A salt bridge allows the electrolyte solution to siphon from one side of the cell to the other so the levels remain equal.
E) A salt bridge allows electrolyte to flow from one half-cell to the other in order to maintain electroneutrality.
20) 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?
A) cathode
B) electrode
C) galvanic cell
D) salt bridge
E) fuel cell
21)
A certain electrochemical cell has for its cell reaction: |
Zn + HgO → ZnO + Hg |
Which is the half-reaction occurring at the anode? |
A) HgO + 2e− → Hg + O2−
B) Zn2++ 2e− → Zn
C) Zn → Zn2+ + 2e−
D) ZnO + 2e− → Zn
22)
Which is the correct cell notation for the following reaction? |
Au3+(aq) + Al(s) →Al3+(aq) + Au(s) |
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)
23)
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? |
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)
24)
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? |
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) + Ni 2+( aq) →Al( s) + Al 3+( aq)
25)
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) |
A)
B)
C)
D)
E)
26) 
Based on the following electrochemical cell, which statement is true? |
Half-Reaction | E° (V) |
Al3+(aq) + 3e– → Al(s) | −1.66 |
Cd2+(aq) + 2e– → Cd(s) | −0.40 |
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.
27) Which is the half-reaction at the anode in a lead storage battery?
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−
28) Which is the half-reaction at the cathode in a lead storage battery?
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−
29) Aluminum does not corrode in the same manner as iron does, because
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.
30) Iron objects such as storage tanks and underground pipelines can be protected from corrosion by connecting them through a wire to a piece of
A) Pb.
B) Ag.
C) Sn.
D) Mg.
E) Cu.
31) Which element is associated with the term "galvanized"?
A) Ga
B) Zn
C) Cd
D) Hg
E) Pb
Document Information
Connected Book
MCQ Test Bank | Introductory Chemistry - 2nd Edition by Burdge and Driessen
By Julia Burdge, Michelle Driessen