Calculat??e ?E?o for the half-cell OH?- l? H?2? I Pt at 25 degrees celsius by using...
Calculat??e ?E?o for the half-cell
OH?- l? H?2? I Pt at 25 degrees celsius by
using the value for the ion product of water K ?w =
1.0*1014 ?, and remember that the half-cell H
?+ ?I H 2 I Pt is the reference electrode for
measuring all standard half-cell potentials. (Hints: Start by
calculating 
?G?o? for the dissociation reaction of water. The
half-cell reactions that are involed are H ?+ +
e?--- > (1/2)H ?2 and ?H ?2O? +
?e ?- --> OH?- + (1/2)H?2 .
Homework Answers
As reduction potential for anode half-cell is zero, reduction potential for cathode half-cell is same as cell voltage for reaction (-0.83 V).
Add Answer to:
Calculat??e ?E?o for the half-cell
OH?- l? H?2? I Pt at 25 degrees celsius by
using...
Show all steps please :) A galvanic cell is prepared using the following two half-cells: (i)...
Show all steps please :)
A galvanic cell is prepared using the following two half-cells: (i) MnO4 (0.273 M), Mn2+ (0.167 M), and H+ (1.0 M), and (ii) Fe2+ (0.247 M) and Fe3+ (0.389 M). The standard reduction potentials for the two half cells are: Mnoa + 8H+ + 5e – Mn2+ + 4H20 E° = 1.507 V Fe3+ + e- Fe2+ E° = 0.770 V a) Calculate the voltage for this galvanic cell. b) Write the balanced equation for...
tandard reduction half-cell potentials at 25 ∘ C Half-reaction E ∘ ( V ) Half-reaction E...
tandard reduction half-cell potentials at 25 ∘ C Half-reaction E ∘ ( V ) Half-reaction E ∘ ( V ) A u 3+ (aq)+3 e − →Au(s) 1.50 F e 2+ (aq)+2 e − →Fe(s) − 0.45 A g + (aq)+ e − →Ag(s) 0.80 C r 3+ (aq)+ e − →C r 2+ (aq) − 0.50 F e 3+ (aq)+3 e − →F e 2+ (aq) 0.77 C r 3+ (aq)+3 e − →Cr(s) − 0.73 C u +...
3. For the electrochemical cell: Pt(s) | H2(1 atm) | H'(I M)I| C u2(1 M) Cu(s),...
3. For the electrochemical cell: Pt(s) | H2(1 atm) | H'(I M)I| C u2(1 M) Cu(s), which one of the following changes will cause an increase in the cell voltage? A) Lower the H2(g) pressure. B) Increase the size/mass of the copper electrode. C) Lower the H (aq) concentration. D) Decrease the concentration of Cu* ion. E) None of the above. 2+
finding E° cell at 25 degrees celcius how do i find gibbs free energy value? 2)...
finding E° cell at 25 degrees celcius
how
do i find gibbs free energy value?
2) Zn / Zn2+ || Agt / Ag 1.0M an, 1.0 M Ag
Temp 25°C I need to calculate Ksp Cell Voltage for: Cu lo.IM OH Cu(OH)2 KCI 10.1M...
Temp 25°C
I need to calculate Ksp
Cell Voltage for: Cu lo.IM OH Cu(OH)2 KCI 10.1M Cu Cu0.25 Cell Voltage for: Cu lo.IM OH I Cu(OH)2 KCI l0.1M Cu I Cu Cell Voltage for: Cu 1.0 MOH I Cu(OH)2l KCI 0.IM CuICu 0 570 0.20 V Calculate 0.3ス v 0.219V E for: Cu l0.1MOH Cu(OH2l KCI l0.1M Cu Cu E for: Cu l0.1M OH I Cu(OH)2l KCI 0.1M Cu2 Cu Е" for: Cu 11.0 MOH' | Cu(OH)! KCI 10.1 M...
due ASAP please help!! 1. 2. 3. 4. Cell potentials for the following species were measured...
due ASAP please help!!
1.
2.
3.
4.
Cell potentials for the following species were measured using the Standard Hydrogen Electrode (SHE) at 25°C: Reaction Fe3+ (aq) + + Fe2+ (aq) Ecell E° = + 0.771 V Cu2+ (aq) + 2e + Cu(s) E° = + 0.340 V 2H+(aq) + 2e + H2(g) E° = 0.000 V Which species is the strongest reductant? O Fe3+ (aq) O Fe2+ (aq) O Cu2+ (aq) O Cu(s) O H2(g) O H+(aq) Cell potentials...
8-10 8. Determine the reduction potential for H2O(l) in neutral water: [H"]= [OH = 10? (6...
8-10
8. Determine the reduction potential for H2O(l) in neutral water: [H"]= [OH = 10? (6 points) (P. = 1 atm) 9. A cobalt electrode is placed in 1.00 L of I M CO(NO3)2(aq) and a chromium electrode is placed in 1.00 L of IM Cr(NO3)3(aq). Electrodes are connected by a wire through a voltmeter and the solutions are connected by a salt bridge. (16 points) a. The reduction reaction will be: b. The oxidation reaction will be: c. The...
table is 18.1 is given. please show work so i understand 4. (a) Use the standard...
table is 18.1 is given. please show work so i understand
4. (a) Use the standard reduction potentials at 25° C in Table 18.1 in Tro, Fridgen and Shaw, and calculate the standard emf E' of an electrochemical cell described by the following reaction: 2 K+ + Mn → Mn + 2 K (b) What is n? (c) What is AGº for this reaction at 25°? (d) What is the equilibrium constant for this reaction at 25°? E (V) Weaker...
T=20 degrees Celsius, T= 273.13+20=293.13 Delta G= Delta H - T×Delta S. 1.What is delta S Using the tables i have provided? 2. What is the significance of the sign Delta S? *PLEASE SHOW ALL CALCULATIO...
T=20 degrees Celsius, T= 273.13+20=293.13
Delta G= Delta H - T×Delta S.
1.What is delta S Using the tables i have provided?
2. What is the significance of the sign Delta S?
*PLEASE SHOW ALL CALCULATIONS*
uBBOsty Part III. Entropy Calculations 1. Use your average AHo and A Go values in The Gibbs-Helmholtz equation (1) to calculate and average ASo value. Also, incorporate your ± values to calculate the precision for Δ. What is the significance of the sign for...
When answering Parts a-h, consider only the molecules and ions, Fe^2+(aq), Cd(OH)2(s), SO4^2-(aq), Al(s), I^-(aq), and Cr2O7^2-(aq), under standard state conditions. (1 pt each) Use standard reduction...
When answering Parts a-h, consider only the molecules and ions,
Fe^2+(aq), Cd(OH)2(s), SO4^2-(aq), Al(s), I^-(aq),
and Cr2O7^2-(aq), under standard state conditions. (1 pt each)
Use standard reduction table.
a) Which of these molecules and ions are oxidizing agents?
b) Which of these molecules and ions are reducing agents?
c) List the oxidizing agents from part a in DECREASING order of
oxidizing agent strength. (strongest OA to weakest OA)
d) List the reducing agents from part b in DECREASING order of...
Show all steps please :)
A galvanic cell is prepared using the following two half-cells: (i) MnO4 (0.273 M), Mn2+ (0.167 M), and H+ (1.0 M), and (ii) Fe2+ (0.247 M) and Fe3+ (0.389 M). The standard reduction potentials for the two half cells are: Mnoa + 8H+ + 5e – Mn2+ + 4H20 E° = 1.507 V Fe3+ + e- Fe2+ E° = 0.770 V a) Calculate the voltage for this galvanic cell. b) Write the balanced equation for...
3. For the electrochemical cell: Pt(s) | H2(1 atm) | H'(I M)I| C u2(1 M) Cu(s), which one of the following changes will cause an increase in the cell voltage? A) Lower the H2(g) pressure. B) Increase the size/mass of the copper electrode. C) Lower the H (aq) concentration. D) Decrease the concentration of Cu* ion. E) None of the above. 2+
finding E° cell at 25 degrees celcius
how
do i find gibbs free energy value?
2) Zn / Zn2+ || Agt / Ag 1.0M an, 1.0 M Ag
Temp 25°C
I need to calculate Ksp
Cell Voltage for: Cu lo.IM OH Cu(OH)2 KCI 10.1M Cu Cu0.25 Cell Voltage for: Cu lo.IM OH I Cu(OH)2 KCI l0.1M Cu I Cu Cell Voltage for: Cu 1.0 MOH I Cu(OH)2l KCI 0.IM CuICu 0 570 0.20 V Calculate 0.3ス v 0.219V E for: Cu l0.1MOH Cu(OH2l KCI l0.1M Cu Cu E for: Cu l0.1M OH I Cu(OH)2l KCI 0.1M Cu2 Cu Е" for: Cu 11.0 MOH' | Cu(OH)! KCI 10.1 M...
due ASAP please help!!
1.
2.
3.
4.
Cell potentials for the following species were measured using the Standard Hydrogen Electrode (SHE) at 25°C: Reaction Fe3+ (aq) + + Fe2+ (aq) Ecell E° = + 0.771 V Cu2+ (aq) + 2e + Cu(s) E° = + 0.340 V 2H+(aq) + 2e + H2(g) E° = 0.000 V Which species is the strongest reductant? O Fe3+ (aq) O Fe2+ (aq) O Cu2+ (aq) O Cu(s) O H2(g) O H+(aq) Cell potentials...
8-10
8. Determine the reduction potential for H2O(l) in neutral water: [H"]= [OH = 10? (6 points) (P. = 1 atm) 9. A cobalt electrode is placed in 1.00 L of I M CO(NO3)2(aq) and a chromium electrode is placed in 1.00 L of IM Cr(NO3)3(aq). Electrodes are connected by a wire through a voltmeter and the solutions are connected by a salt bridge. (16 points) a. The reduction reaction will be: b. The oxidation reaction will be: c. The...
table is 18.1 is given. please show work so i understand
4. (a) Use the standard reduction potentials at 25° C in Table 18.1 in Tro, Fridgen and Shaw, and calculate the standard emf E' of an electrochemical cell described by the following reaction: 2 K+ + Mn → Mn + 2 K (b) What is n? (c) What is AGº for this reaction at 25°? (d) What is the equilibrium constant for this reaction at 25°? E (V) Weaker...
T=20 degrees Celsius, T= 273.13+20=293.13
Delta G= Delta H - T×Delta S.
1.What is delta S Using the tables i have provided?
2. What is the significance of the sign Delta S?
*PLEASE SHOW ALL CALCULATIONS*
uBBOsty Part III. Entropy Calculations 1. Use your average AHo and A Go values in The Gibbs-Helmholtz equation (1) to calculate and average ASo value. Also, incorporate your ± values to calculate the precision for Δ. What is the significance of the sign for...
When answering Parts a-h, consider only the molecules and ions,
Fe^2+(aq), Cd(OH)2(s), SO4^2-(aq), Al(s), I^-(aq),
and Cr2O7^2-(aq), under standard state conditions. (1 pt each)
Use standard reduction table.
a) Which of these molecules and ions are oxidizing agents?
b) Which of these molecules and ions are reducing agents?
c) List the oxidizing agents from part a in DECREASING order of
oxidizing agent strength. (strongest OA to weakest OA)
d) List the reducing agents from part b in DECREASING order of...
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