A Cr3+(aq) solution is electrolyzed, using a current of 6.90 A. 1. What mass of Cr(s)...
A Cr3+(aq) solution is electrolyzed, using a current of 6.90 A.
1. What mass of Cr(s) is plated out after 1.60 days?
2. What amperage is required to plate out 0.220 mol Cr from a Cr3+ solution in a period of 8.90 h?
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A Cr3+(aq) solution is electrolyzed, using a current of 6.90
A.
1. What mass of Cr(s)...
1) The value of E˚ for the following reaction is 1.10 V. What is the value...
1) The value of E˚ for the following reaction is 1.10 V. What is the value of Ecell when the concentration of Ag+ is 0.12 M and the concentration of Cr3+ is 0.40 M? Cr (s) + 3Ag+ (aq) à 3Ag (s) + Cr3+ (aq) E˚ = 1.54 V 2) How long will it take to plate out 2.19 g of chromium metal (52.0 g/mol) from a solution of CrBr3, using a current of 35.2 amps?
A galvanic cell Cr(s) Cr Taq) Co "(aq) Co(s) s constructed using a completely immersed Cr electrode that weighs 32.8 g and a Co electrode mmersed in 454 mL of 1.00 M Co2*(aq) solution. A steady c...
A galvanic cell Cr(s) Cr Taq) Co "(aq) Co(s) s constructed using a completely immersed Cr electrode that weighs 32.8 g and a Co electrode mmersed in 454 mL of 1.00 M Co2*(aq) solution. A steady current of 0.0768 A is drawn from the cell as the electrons move from the Cr electrode to the Co electrode. Enter symbol (b) How long does it take for the cell to be completely discharged? (c) How much mass has the Co electrode...
The voltaic cell is made of the following two electrodes: 9. Fe (0.200 M) 2e Fe(s)...
The voltaic cell is made of the following two electrodes: 9. Fe (0.200 M) 2e Fe(s) E.d= -0.44 v, Fe(0.100 M) e Fe (0.200 M) Eed0.77 v. Which electrode works as an anode? (20 pt) al Write the cell reaction. b) Calculate E°cell and Ecel. cl 10. A Cr(ag) solution is electrolyzed, using a current of 5.30 A for 2.00 days. What mass of Cr(s) (AM: 52.0) is plated out? (F=96485 C /mol) 11. For nuclear reaction occurred in the...
A voltaic cell utilizes the following reaction and operates at 298 K: 3Ce4+(aq)+Cr(s)→3Ce3+(aq)+Cr3+(aq). emf=2.35 1. What...
A voltaic cell utilizes the following reaction and operates at 298 K: 3Ce4+(aq)+Cr(s)→3Ce3+(aq)+Cr3+(aq). emf=2.35 1. What is the emf of this cell when [Ce4+]= 1.1 M , [Ce3+]= 1.2×10−2 M , and [Cr3+]=1.1×10−2 M ? 2. when [Ce4+]= 0.40 M ,[Ce3+]= 0.75 M , and [Cr3+]= 1.6 M ?
8. Using the cell notation Cr3+ (aq, 0.0150 mol/L)/Cr(s)|| Pb(s)|Pb2+ (aq, 0.0355) A. (10 pts) Complete...
8. Using the cell notation Cr3+ (aq, 0.0150 mol/L)/Cr(s)|| Pb(s)|Pb2+ (aq, 0.0355) A. (10 pts) Complete the table below for the cell as written in the above notation. B. (5 pts) What is the balanced net ionic equation represented? C. (10 pts) If the cell is constructed, what is the cell potential initially measured. Assume 25.00°C D. (5 pts) is the reaction spontaneous as written? Why or why not? (10 pts) If the cell is permitted to proceed to equilibrium,...
help with this one Construct a galvanic cell using the following half-reactions: Cr3+ (aq) + 3e - Cr(s) º = -0.56 V...
help with this one
Construct a galvanic cell using the following half-reactions: Cr3+ (aq) + 3e - Cr(s) º = -0.56 V 2 Hg2+(aq) + 2e - H922+(aq) = 0.92 V 2 Ho2+ The initial concentrations are: [Cr3+] =0.31 M [Hg2+] =2.57 M [Hg22+] =0.49 M (1) What is the potential of this non-standard cell at 298 K? Give your answer to 3 sig. figs. E(V) = Submit Answer Tries 0/2 (ii) How will each of the following changes to...
9) A galvanic cell Cr(s)|Cr2+(aq) || Pb2+(aq)|Pb(s) is constructed using a completely immersed Cr electrode that...
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salt bridge ME Cr(s) electrode Cu(s) electrode 1.0 M Cr3+ (aq) 1.0 M Cu2+ (aq) A...
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A galvanic cell Cr(s)/Cr2+(aq) || Sna+(aq)|Sn(s) is constructed using a completely immersed Cr electrode that weighs 35...
A galvanic cell Cr(s)/Cr2+(aq) || Sna+(aq)|Sn(s) is constructed using a completely immersed Cr electrode that weighs 35.5 g and a Sn electrode immersed in 535 mL of 1.00 M Sn2+(aq) solution. A steady current of 0.0692 A is drawn from the cell as the electrons move from the Cr electrode to the Sn electrode. (a) Which reactant is the limiting reactant in this cell? Enter symbol (b) How long does it take for the cell to be completely discharged? (c)...
A galvanic cell Cr(s)|Cr2+(aq) || Cu2+(aq)|Cu(s) is constructed using a completely immersed Cr electrode that weighs 35.4 g and a Cu electrode immersed in 462 mL of 1.00 M Cu2+(aq) solution. A steady...
A galvanic cell Cr(s)|Cr2+(aq) || Cu2+(aq)|Cu(s) is constructed using a completely immersed Cr electrode that weighs 35.4 g and a Cu electrode immersed in 462 mL of 1.00 M Cu2+(aq) solution. A steady current of 0.0795 A is drawn from the cell as the electrons move from the Cr electrode to the Cu electrode. (a) Which reactant is the limiting reactant in this cell? Enter symbol (b) How long does it take for the cell to be completely discharged? s...
A galvanic cell Cr(s) Cr Taq) Co "(aq) Co(s) s constructed using a completely immersed Cr electrode that weighs 32.8 g and a Co electrode mmersed in 454 mL of 1.00 M Co2*(aq) solution. A steady current of 0.0768 A is drawn from the cell as the electrons move from the Cr electrode to the Co electrode. Enter symbol (b) How long does it take for the cell to be completely discharged? (c) How much mass has the Co electrode...
The voltaic cell is made of the following two electrodes: 9. Fe (0.200 M) 2e Fe(s) E.d= -0.44 v, Fe(0.100 M) e Fe (0.200 M) Eed0.77 v. Which electrode works as an anode? (20 pt) al Write the cell reaction. b) Calculate E°cell and Ecel. cl 10. A Cr(ag) solution is electrolyzed, using a current of 5.30 A for 2.00 days. What mass of Cr(s) (AM: 52.0) is plated out? (F=96485 C /mol) 11. For nuclear reaction occurred in the...
8. Using the cell notation Cr3+ (aq, 0.0150 mol/L)/Cr(s)|| Pb(s)|Pb2+ (aq, 0.0355) A. (10 pts) Complete the table below for the cell as written in the above notation. B. (5 pts) What is the balanced net ionic equation represented? C. (10 pts) If the cell is constructed, what is the cell potential initially measured. Assume 25.00°C D. (5 pts) is the reaction spontaneous as written? Why or why not? (10 pts) If the cell is permitted to proceed to equilibrium,...
help with this one
Construct a galvanic cell using the following half-reactions: Cr3+ (aq) + 3e - Cr(s) º = -0.56 V 2 Hg2+(aq) + 2e - H922+(aq) = 0.92 V 2 Ho2+ The initial concentrations are: [Cr3+] =0.31 M [Hg2+] =2.57 M [Hg22+] =0.49 M (1) What is the potential of this non-standard cell at 298 K? Give your answer to 3 sig. figs. E(V) = Submit Answer Tries 0/2 (ii) How will each of the following changes to...
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 galvanic cell Cr(s)/Cr2+(aq) || Sna+(aq)|Sn(s) is constructed using a completely immersed Cr electrode that weighs 35.5 g and a Sn electrode immersed in 535 mL of 1.00 M Sn2+(aq) solution. A steady current of 0.0692 A is drawn from the cell as the electrons move from the Cr electrode to the Sn electrode. (a) Which reactant is the limiting reactant in this cell? Enter symbol (b) How long does it take for the cell to be completely discharged? (c)...
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