We created a Cu/Zn cell by placing 0.10 M ZnSO4 in to a porous cup and...
We created a Cu/Zn cell by placing 0.10 M ZnSO4 in to
a porous cup and poured 0.10 M CuSO4 in to a beaker
surrounding the porous cup. We placed a Zn electrode in to the Zn
solution and a copper electrode in the Cu solution.
a) Calculate the expected potential V (our measured potential V was
around 1.09 so it should be around there I believe)
b) The e- flow from which electrode?
c) The e- flow to which electrode?
d) Which substance acts as the cathode?
I've attached a table of standard electrode potentials for
half-reactions that we were provided.
Homework Answers
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We created a Cu/Zn cell by placing 0.10 M ZnSO4 in to
a porous cup and...
salt bridge Zn(s) electrode Culs) electrode 1.0M Zn (a 1.0 M Cu (aq A voltaic cell...
salt bridge Zn(s) electrode Culs) electrode 1.0M Zn (a 1.0 M Cu (aq A voltaic cell similar to that shown in the figure above is constructed. The electronic device shown at the top of the figure is a volt meter. One electrode compartment consists of a zinc strip placed in a 1.0 M ZnCl2 solution, and the other has a copper strip placed in a 1.0 M CuSOA solution. The overall cell reaction is: Zn(s)Cu2+(aq)= zn2+ (aq ) Cu (s)...
*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 zinc-copper battery is constructed as follows: Zn | Zn+2(0.10 M) || Cu+2 (2.50 M)| Cu The mass of each electrode is 200.0 g
A zinc-copper battery is constructed as follows: Zn | Zn+2(0.10 M) || Cu+2 (2.50 M)| Cu The mass of each electrode is 200.0 g. Each half cell contains 1.00 liter of solution. a) Calculate the cell potential when this battery is first connected. b) Calculate the cell potential after a current of 10.0 amperes has flowed for 10.0 hours. c) Calculate the mass of each electrode after 10.0 hours. d) What is the total life span of this battery, delivering...
data collected Cu(NO3)2 | Zn(NO3)2 = 0.999 V Pb | 1.0 M Pb(NO3)2 || 1.0 M...
data collected
Cu(NO3)2 | Zn(NO3)2 = 0.999 V
Pb | 1.0 M Pb(NO3)2 || 1.0 M Zn(NO3)2 | Zn = 0.396 V
PART B: REDUCTION POTENTIALS 1. Report the measured cell potential for each galvanic cell and state which electrode corresponds to the cathode and which to the anode. 2. Given E = -0.76 V for the Zn/Zn half-cell, and your measured Ecell, calculate the reduction potential at the Cu and Pb electrodes and write the redox half- 6 reactions...
Consider a galvanic cell that contains a Zn metal electrode and a 0.10 M Zn(NO3)2 solution...
Consider a galvanic cell that contains a Zn metal electrode and a 0.10 M Zn(NO3)2 solution in one half-cell and a Sn metal electrode and a 0.10 M Sn(NO3)2 solution in the other half-cell. If the measured Ecell value is +0.60 V and the Zn2+/Zn reduction potential is assumed to be -0.79 V, what is the Sn2+/Sn reduction potential? Show all work
How do you calculate potential V given Zn + Br2 (sat'd) -> Zn^2+ (0.10M) + 2Br-(0.5M)...
How do you calculate potential V given Zn + Br2 (sat'd) -> Zn^2+ (0.10M) + 2Br-(0.5M) Our measured potential (V) was 1.81. and the formula we used was Ecell= E^0cell - (0.0592)/n * log Q also, which substance is oxidized? which substance acts as the cathode, the e- flow FROM which electrode, and the e- flow TO which electrode? Thanks.
salt bridge ME Cr(s) electrode Cu(s) electrode 1.0 M Cr3+ (aq) 1.0 M Cu2+ (aq) A...
salt bridge ME Cr(s) electrode Cu(s) electrode 1.0 M Cr3+ (aq) 1.0 M Cu2+ (aq) A electrolytic cell similar to that shown in the figure above is constructed. The electronic device shown at the top of the figure is a power supply. One electrode compartment consists of a chromium strip placed in a 1.0 M CrCl3 solution, and the other has a copper strip placed in a 1.0 M CuSO4 solution. The overall cell reaction is: 2 Cr3+ (aq) +...
*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,...
(5 pts) Zn electrode is inserted in 0.001 M solution of ZnSO4 and it is connected...
(5 pts) Zn electrode is inserted in 0.001 M solution of ZnSO4 and it is connected via ammeter to COM terminal of a digital voltmeter. Then (+) terminal of the voltmeter is connected to SHE, which, in turn, is connected via salt bridge with ZnSO4 solution. Initially, current of 30 mA flows through the ammeter. What is the reading of the voltmeter if the internal resistance of battery is 10 ohm? The standard reduction potential of zinc ions is -0.76...
AGE 11. The measured cell potential is 0.900 V for a Zn/Cu voltaic battery. The anode...
AGE 11. The measured cell potential is 0.900 V for a Zn/Cu voltaic battery. The anode is Zn in a 0.950 M solution, the cathode is Cu in a Cu? solution. What is the [Cut) in the copper half-cell? E =.9004-0.05916 - [CURY .950 Z 03-900v-,02958 log Cour] 950 Ecu2t -1=002958109 150 02958 02958 -30.43 = log catento -2. [Cu]= _ Xm
salt bridge Zn(s) electrode Culs) electrode 1.0M Zn (a 1.0 M Cu (aq A voltaic cell similar to that shown in the figure above is constructed. The electronic device shown at the top of the figure is a volt meter. One electrode compartment consists of a zinc strip placed in a 1.0 M ZnCl2 solution, and the other has a copper strip placed in a 1.0 M CuSOA solution. The overall cell reaction is: Zn(s)Cu2+(aq)= zn2+ (aq ) Cu (s)...
*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...
data collected
Cu(NO3)2 | Zn(NO3)2 = 0.999 V
Pb | 1.0 M Pb(NO3)2 || 1.0 M Zn(NO3)2 | Zn = 0.396 V
PART B: REDUCTION POTENTIALS 1. Report the measured cell potential for each galvanic cell and state which electrode corresponds to the cathode and which to the anode. 2. Given E = -0.76 V for the Zn/Zn half-cell, and your measured Ecell, calculate the reduction potential at the Cu and Pb electrodes and write the redox half- 6 reactions...
salt bridge ME Cr(s) electrode Cu(s) electrode 1.0 M Cr3+ (aq) 1.0 M Cu2+ (aq) A electrolytic cell similar to that shown in the figure above is constructed. The electronic device shown at the top of the figure is a power supply. One electrode compartment consists of a chromium strip placed in a 1.0 M CrCl3 solution, and the other has a copper strip placed in a 1.0 M CuSO4 solution. The overall cell reaction is: 2 Cr3+ (aq) +...
*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,...
(5 pts) Zn electrode is inserted in 0.001 M solution of ZnSO4 and it is connected via ammeter to COM terminal of a digital voltmeter. Then (+) terminal of the voltmeter is connected to SHE, which, in turn, is connected via salt bridge with ZnSO4 solution. Initially, current of 30 mA flows through the ammeter. What is the reading of the voltmeter if the internal resistance of battery is 10 ohm? The standard reduction potential of zinc ions is -0.76...
AGE 11. The measured cell potential is 0.900 V for a Zn/Cu voltaic battery. The anode is Zn in a 0.950 M solution, the cathode is Cu in a Cu? solution. What is the [Cut) in the copper half-cell? E =.9004-0.05916 - [CURY .950 Z 03-900v-,02958 log Cour] 950 Ecu2t -1=002958109 150 02958 02958 -30.43 = log catento -2. [Cu]= _ Xm
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