both questions go together... thanks!Standard Reduction (Electrode) Potentials at 25 oCHalf-Cell ReactionEo (volts)Standard Reduction (Electrode) Potentials at 25 oCHalf-Cell ReactionEo (volts)F2(g) + 2 e- 2 F-(aq)2.87Ce4+(aq) + e- Ce3+(aq)1.61MnO4-(aq) + 8 H+(aq) + 5 e- Mn2+(aq) + 4 H2O(l)1.51Cl2(g) + 2 e- 2 Cl-(aq)1.36Cr2O72-(aq) + 14 H+(aq) + 6 e- 2 Cr3+(aq) + 7 H2O(l)1.33O2(g) + 4 H+(aq) + 4 e- 2 H2O(l)1.229Br2(l) + 2 e- 2 Br-(aq)1.08NO3-(aq) + 4 H+(aq) + 3 e- NO(g) + 2 H2O(l)0.962 Hg2+(aq) + 2 e- Hg22+(aq)0.920Hg2+(aq) + 2 e- Hg(l)0.855Ag+(aq) + e- Ag(s)0.799Hg22+(aq) + 2 e- 2 Hg(l)0.789Fe3+(aq) + e- Fe2+(aq)0.771I2(s) + 2 e- 2 I-(aq)0.535Fe(CN)63-(aq) + e- Fe(CN)64-(aq)0.48Cu2+(aq) + 2 e- Cu(s)0.337Cu2+(aq) + e- Cu+(aq)0.153S(s) + 2 H+(aq) + 2 e- H2S(aq)0.142 H+(aq) + 2 e- H2(g)0.0000Pb2+(aq) + 2 e- Pb(s)-0.126Sn2+(aq) + 2 e- Sn(s)-0.14Ni2+(aq) + 2 e- Ni(s)-0.25Co2+(aq) + 2 e- Co(s)-0.28Cd2+(aq) + 2 e- Cd(s)-0.403Cr3+(aq) + e- Cr2+(aq)-0.41Fe2+(aq) + 2 e- Fe(s)-0.44Cr3+(aq) + 3 e- Cr(s)-0.74Zn2+(aq) + 2 e- Zn(s)-0.7632 H2O(l) + 2 e- H2(g) + 2 OH-(aq)-0.83Mn2+(aq) + 2 e- Mn(s)-1.18Al3+(aq) + 3 e- Al(s)-1.66Mg2+(aq) + 2 e- Mg(s)-2.37Na+(aq) + e- Na(s)-2.714K+(aq) + e- K(s)-2.925Li+(aq) + e- Li(s) A standard galvanic cell is constructed in which a Cu?* | Cu half cell acts as the cathode. Which of the following statements are correct?Hint: Refer to a table of standard reduction potentials.(Choose all that apply.)Mn²+.2*|Mn could be the other standard half cell.The anode reaction could be Mn -> Mn²+ + 2e| The cathode reaction is Cu -> Cu?+ + 2e"| In the external circuit, electrons flow from the other compartment to the Cu²"|Cu compartment.Br2|Br" could be the other standard half cell.O O O O O A standard galvanic cell is constructed with Cu2*|Cu and Al*|Al half cell compartments connected by a salt bridge. Which of the followingstatements are correct?Hint: Refer to a table of standard reduction potentials.(Choose all that apply.)| The anode compartment is the Cu2"|Cu compartment.O Cu is oxidized at the anode.O Al is oxidized at the anode.| In the external circuit, electrons flow from the Cu²"|Cu compartment to the Al3*Al compartment.O As the cell runs, anions will migrate from the Cu²*|Cu compartment to the Al³*|Al compartment.

Cathode and anode in galvanic cells are chosen based on their reduction potentials. An electrode with a comparatively negative reduction potential is an anode and an electrode with comparatively positive reduction potential is a cathode. Electrons always flow from anode to cathode and anions flow from cathode to anode in order to balance the positive charge of cations produced in oxidation half-cell.1. A Cu2+/Cu half-cell has a reduction potential equal to 0.337 V and a Mn2+/Mn half-cell has a reduction potential equal to -1.18 V. Thus Cu2+/Cu half-cell will be cathode and the other cell could be a Mn2+/Mn half-cell (which will act as anode). Of the given statements, 1st, 2nd, and 4th statements are correct. 2. Here Cu2+/Cu half-cell acts as cathode and Al3+/Al half-cell acts as anode as Aluminium electrode has a negative reduction potential equal to -1.66 V as compared to Copper half-cell which has a reduction potential equal to 0.337 V. Here 3rd and 5th statement are correct.

Answered: A standard galvanic cell is constructed…

Chemistry

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ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

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Standard Reduction (Electrode) Potentials at 25 ^oC
Half-Cell Reaction	E^o (volts)
Standard Reduction (Electrode) Potentials at 25 ^oC
Half-Cell Reaction	E^o (volts)
F₂(g) + 2 e^- 2 F^-(aq)	2.87
Ce⁴⁺(aq) + e^- Ce³⁺(aq)	1.61
MnO₄^-(aq) + 8 H⁺(aq) + 5 e^- Mn²⁺(aq) + 4 H₂O(l)	1.51
Cl₂(g) + 2 e^- 2 Cl^-(aq)	1.36
Cr₂O₇^2-(aq) + 14 H⁺(aq) + 6 e^- 2 Cr³⁺(aq) + 7 H₂O(l)	1.33
O₂(g) + 4 H⁺(aq) + 4 e^- 2 H₂O(l)	1.229
Br₂(l) + 2 e^- 2 Br^-(aq)	1.08
NO₃^-(aq) + 4 H⁺(aq) + 3 e^- NO(g) + 2 H₂O(l)	0.96
2 Hg²⁺(aq) + 2 e^- Hg₂²⁺(aq)	0.920
Hg²⁺(aq) + 2 e^- Hg(l)	0.855
Ag⁺(aq) + e^- Ag(s)	0.799
Hg₂²⁺(aq) + 2 e^- 2 Hg(l)	0.789
Fe³⁺(aq) + e^- Fe²⁺(aq)	0.771
I₂(s) + 2 e^- 2 I^-(aq)	0.535
Fe(CN)₆^3-(aq) + e^- Fe(CN)₆^4-(aq)	0.48
Cu²⁺(aq) + 2 e^- Cu(s)	0.337
Cu²⁺(aq) + e^- Cu⁺(aq)	0.153
S(s) + 2 H⁺(aq) + 2 e^- H₂S(aq)	0.14
2 H⁺(aq) + 2 e^- H₂(g)	0.0000
Pb²⁺(aq) + 2 e^- Pb(s)	-0.126
Sn²⁺(aq) + 2 e^- Sn(s)	-0.14
Ni²⁺(aq) + 2 e^- Ni(s)	-0.25
Co²⁺(aq) + 2 e^- Co(s)	-0.28
Cd²⁺(aq) + 2 e^- Cd(s)	-0.403
Cr³⁺(aq) + e^- Cr²⁺(aq)	-0.41
Fe²⁺(aq) + 2 e^- Fe(s)	-0.44
Cr³⁺(aq) + 3 e^- Cr(s)	-0.74
Zn²⁺(aq) + 2 e^- Zn(s)	-0.763
2 H₂O(l) + 2 e^- H₂(g) + 2 OH^-(aq)	-0.83
Mn²⁺(aq) + 2 e^- Mn(s)	-1.18
Al³⁺(aq) + 3 e^- Al(s)	-1.66
Mg²⁺(aq) + 2 e^- Mg(s)	-2.37
Na⁺(aq) + e^- Na(s)	-2.714
K⁺(aq) + e^- K(s)	-2.925
Li⁺(aq) + e^- Li(s)

A standard galvanic cell is constructed in which a Cu?* | Cu half cell acts as the cathode. Which of the following statements are correct?
Hint: Refer to a table of standard reduction potentials.
(Choose all that apply.)
Mn²+.
2*|Mn could be the other standard half cell.
The anode reaction could be Mn -> Mn²+ + 2e
| The cathode reaction is Cu -> Cu?+ + 2e"
| In the external circuit, electrons flow from the other compartment to the Cu²"|Cu compartment.
Br2|Br" could be the other standard half cell.
O O O O O

A standard galvanic cell is constructed with Cu2*|Cu and Al*|Al half cell compartments connected by a salt bridge. Which of the following
statements are correct?
Hint: Refer to a table of standard reduction potentials.
(Choose all that apply.)
| The anode compartment is the Cu2"|Cu compartment.
O Cu is oxidized at the anode.
O Al is oxidized at the anode.
| In the external circuit, electrons flow from the Cu²"|Cu compartment to the Al3*Al compartment.
O As the cell runs, anions will migrate from the Cu²*|Cu compartment to the Al³*|Al compartment.

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