Copper is to be deposited from a solution that is 0.200 M in Cu(II) and is...
- Copper is to be deposited from a solution that is 0.200 M in Cu(II) and is buffered to a pH of 4.00. Oxygen is evolved from the anode at a partial pressure of 0.974 atm. The cell has a resistance of 3.60 Ω. The temperature is 25 oC.
Cu2+ + 2e- = Cu(s) Eo = .339V
½ O2 + 2H+ + 2e- = H2O Eo = 1.229V
Calculate:
- the theoretical potential, Ecell, needed to initiate deposition of copper from this solution.
- the IR drop associated with a current of 0.10 A in this cell.
- the initial potential, given that the overvoltage of oxygen is 0.50 V under these conditions.
- the potential of the cell when [Cu2+] is 8.00 x 10-6M, assuming that IR drop and O2 overvoltage remain unchanged.
Homework Answers
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Copper is to be deposited from a solution that is 0.200 M in
Cu(II) and is...
*A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(II), [Cu(NH3)4]2+. If a standard hydrogen electrode is used as the cathode, the ce...
*A copper, Cu(s), electrode is immersed in a solution that is
1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(II),
[Cu(NH3)4]2+. If a standard hydrogen electrode is used as the
cathode, the cell potential, Ecell, is found to be 0.070 V at 298
K.
A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(II), [NH. If a standard hydrogen electrode is used as the cathode, the cell potential,...
3. The apparatus in Figure I is used for electrolytic deposition of 0.0500 M Cu2 ion from a solut...
3. The apparatus in Figure I is used for electrolytic deposition of 0.0500 M Cu2 ion from a solution which is buffered to pH 3.00. Oxygen is evolved at the anode at 1.00 atm. E07% = 0.000 V. (a) Given that Ecu 2+/Cu 6 to 12 V de -0.337 V,E:2/H20 7 V, E02/H,o 1.229 V and the internal resistance of the cell is 15.0 Ω. current(A Calculate the potential that must be applied to cause an Voltmeter electrolytic current of...
A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3,...
A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(I), [Cu(NH). If a standard hydrogen electrode is used as the cathode, the cell potential, Ecell, is found to be 0.074 V at 298 K Constants Periodic Table Use the standard reduction potentials shown here to answer the questions Reduction half-reaction E (V) Cu2+ (aq) 2e Cu(s) 0.337 2H + (aq) + 2e →H, (g) | 0.000 ▼ Part A...
It is expected that a chemical reaction will occur when copper metal is combined with aqueous...
It is expected that a chemical reaction will occur when copper metal is combined with aqueous zinc sulfate. Explain why there will be no reaction when zinc metal and aqueous copper sulfate solution are combined. Identify the anode and the cathode, assuming a voltaic cell is constructed. Note: Be careful in the calculation of the standard cell potential ( Eo cathode - Eo anode). Do not change the sign of the given reduction potential. The sign is already taken care...
A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3,...
A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(II), [Cu(NH3)4]2+. If a standard hydrogen electrode is used as the cathode, the cell potential, Ecell, is found to be 0.068 V at 298 K. Based on the cell potential, what is the concentration of Cu2+ in this solution? Express your answer to one significant figure and include the appropriate units.
Given the following electrolytic cell: The current is discharged into the electrolytic cell containing the solution CuSO4(aq) 1.0M at 25 oC. During the operation of the cell, copper Cu(s) is deposite...
Given the following electrolytic cell:
The current is discharged into the electrolytic cell containing
the solution CuSO4(aq) 1.0M at 25 oC. During
the operation of the cell, copper Cu(s) is deposited on
one electrode and oxygen O2(g) gas is released, near the
second electrode.
O2(g) + 4H3O+(aq) +
4e-
6H2O(l) Eo= 1.23V
Cu2+(aq) + 2e- Cu(s)
Eo= 0.34V
A. Write the direction of the flow of electrons in the
cell.
B. Write the electrolysis equation that occurs in the cell....
Formation Constant from Cell Potentlal (<) 16 of 22 A copper, Cu(s). electrode is immersed in...
Formation Constant from Cell Potentlal (<) 16 of 22 A copper, Cu(s). electrode is immersed in a solution that is 1.00 M in ammonia, NHs, and 1.00 A in tetraamminecopper(I), Cu(NHIf a standard hydrogen electrode is used as the cathode, the cell potential, Eeell, is found to be 0.067 V at 298 K s Periodic ReviewI Constant Table Use the standard reduction potentials shown here to answer the questions. Reduction half-reactionE (V) Cu2+ (aq) + 2e-→Cu(s) 0.337 2H (aq) +2e...
In a copper-zinc voltaic cell, one half-cell consists of a ZnZn electrode inserted in a solution...
In a copper-zinc voltaic cell, one half-cell consists of a ZnZn
electrode inserted in a solution of zinc sulfate and the other
half-cell consists of a CuCu electrode inserted in a copper sulfate
solution. These two half-cells are separated by a salt bridge.
At the zinc electrode (anode), ZnZn metal undergoes oxidation by
losing two electrons and enters the solution as Zn2+Zn2+ ions. The
oxidation half-cell reaction that takes place at the anode is
Zn(s)→Zn2+(aq)+2e−Zn(s)→Zn2+(aq)+2e−
The CuCu ions undergo reduction...
Prelab Activity: Electrochemical Cells To determine the solubility product of copper(II) carbonate, CuCO3 , a concentration...
Prelab Activity:
Electrochemical Cells
To determine the solubility product of copper(II) carbonate,
CuCO3 , a concentration cell as described on pages 71-72
of the lab handout is constructed. The temperature of the Galvanic
cell is measured to be 22.5°C, and the cell potential 282 mV (0.282
V). Using this data and Equation 8 in the lab manual, calculate the
Ksp for CuCO3 and report your answer with
three significant digits.
For the Galvanic cell you will construct in PART B,...
*redox reactions in electeochemical cells* c) Fe/0.1 M FeSO4//0.1 M CuSO4/Cu I soaked a porous cup in tap water for a few minutes and then i let it stand in a 100 ml beaker containing 10ml of 0.1 M Fe...
*redox reactions in electeochemical cells*
c) Fe/0.1 M FeSO4//0.1 M CuSO4/Cu
I soaked a porous cup in tap water for a few minutes and then i
let it stand in a 100 ml beaker containing 10ml of 0.1 M FeSO4. I
added enough 0.1M CuSO4 to the cup until the two liquid levels were
the same height. I inserted a zinc strip into the 0.1 M FeSO4 and a
shiny copper strip into the 0.1 M CuSO4. I connected the...
*A copper, Cu(s), electrode is immersed in a solution that is
1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(II),
[Cu(NH3)4]2+. If a standard hydrogen electrode is used as the
cathode, the cell potential, Ecell, is found to be 0.070 V at 298
K.
A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(II), [NH. If a standard hydrogen electrode is used as the cathode, the cell potential,...
3. The apparatus in Figure I is used for electrolytic deposition of 0.0500 M Cu2 ion from a solution which is buffered to pH 3.00. Oxygen is evolved at the anode at 1.00 atm. E07% = 0.000 V. (a) Given that Ecu 2+/Cu 6 to 12 V de -0.337 V,E:2/H20 7 V, E02/H,o 1.229 V and the internal resistance of the cell is 15.0 Ω. current(A Calculate the potential that must be applied to cause an Voltmeter electrolytic current of...
A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(I), [Cu(NH). If a standard hydrogen electrode is used as the cathode, the cell potential, Ecell, is found to be 0.074 V at 298 K Constants Periodic Table Use the standard reduction potentials shown here to answer the questions Reduction half-reaction E (V) Cu2+ (aq) 2e Cu(s) 0.337 2H + (aq) + 2e →H, (g) | 0.000 ▼ Part A...
Given the following electrolytic cell:
The current is discharged into the electrolytic cell containing
the solution CuSO4(aq) 1.0M at 25 oC. During
the operation of the cell, copper Cu(s) is deposited on
one electrode and oxygen O2(g) gas is released, near the
second electrode.
O2(g) + 4H3O+(aq) +
4e-
6H2O(l) Eo= 1.23V
Cu2+(aq) + 2e- Cu(s)
Eo= 0.34V
A. Write the direction of the flow of electrons in the
cell.
B. Write the electrolysis equation that occurs in the cell....
Formation Constant from Cell Potentlal (<) 16 of 22 A copper, Cu(s). electrode is immersed in a solution that is 1.00 M in ammonia, NHs, and 1.00 A in tetraamminecopper(I), Cu(NHIf a standard hydrogen electrode is used as the cathode, the cell potential, Eeell, is found to be 0.067 V at 298 K s Periodic ReviewI Constant Table Use the standard reduction potentials shown here to answer the questions. Reduction half-reactionE (V) Cu2+ (aq) + 2e-→Cu(s) 0.337 2H (aq) +2e...
In a copper-zinc voltaic cell, one half-cell consists of a ZnZn
electrode inserted in a solution of zinc sulfate and the other
half-cell consists of a CuCu electrode inserted in a copper sulfate
solution. These two half-cells are separated by a salt bridge.
At the zinc electrode (anode), ZnZn metal undergoes oxidation by
losing two electrons and enters the solution as Zn2+Zn2+ ions. The
oxidation half-cell reaction that takes place at the anode is
Zn(s)→Zn2+(aq)+2e−Zn(s)→Zn2+(aq)+2e−
The CuCu ions undergo reduction...
Prelab Activity:
Electrochemical Cells
To determine the solubility product of copper(II) carbonate,
CuCO3 , a concentration cell as described on pages 71-72
of the lab handout is constructed. The temperature of the Galvanic
cell is measured to be 22.5°C, and the cell potential 282 mV (0.282
V). Using this data and Equation 8 in the lab manual, calculate the
Ksp for CuCO3 and report your answer with
three significant digits.
For the Galvanic cell you will construct in PART B,...
*redox reactions in electeochemical cells*
c) Fe/0.1 M FeSO4//0.1 M CuSO4/Cu
I soaked a porous cup in tap water for a few minutes and then i
let it stand in a 100 ml beaker containing 10ml of 0.1 M FeSO4. I
added enough 0.1M CuSO4 to the cup until the two liquid levels were
the same height. I inserted a zinc strip into the 0.1 M FeSO4 and a
shiny copper strip into the 0.1 M CuSO4. I connected the...
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