Homework Answers
Answer
cell potential = 0.017V
Explanation
Oxidation half reaction
Fe(s) ----------> Fe2+(aq) + 2e- E°red = -0.440V
Reduction half reaction
Cd2+(aq) + 2e- ----------> Cd(s) E°red = -0.403V
Overall reaction
Fe(s) + Cd2+(aq) ---------> Fe2+(aq) + Cd(s)(aq)
E° = E°red, cathode - E°red,anode
E° = - 0.403V - (- 0.440V)
E°= -0.403V + 0.440V
E° = 0.037V
number of electron transfer , n = 2
Reaction quotient ,Q = [Fe2+]/[Cd2+]
When cathaode solution concentration decreased by 0.657M ande solution concentration increases by 0.657M
Q = ( 1.000M + 0.657M)/( 1.000M - 0.657M)
Q = 4.8309
Nernst equation at 298K is
Ecell = E° - (0.0592V/n)logQ
Ecell = 0.037V - ( 0.0592V/2)log4.8309
Ecell = 0.037V - 0.020
Ecell = 0.017V
Add Answer to:
Consider a galvanic cell based on the following two half reactions under standard conditions at 298...
A chem igns a galvanic cell that uses these two half reactions: standard reduction potential half-reaction...
A chem igns a galvanic cell that uses these two half reactions: standard reduction potential half-reaction (aq)+4 H,0(1)+3e" → Cr(OH)2(3)+50H (aq) cro Ered=-0.13 V Fe?+ (aq)+e → Fe2+ (aq) E = +0.771 V Answer the following questions about this cell. 0-0 0 Write a balanced equation for the half-reaction that happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. X 5 Write a balanced equation for the overall reaction that powers the cell....
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential =...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential = +0.771 V Fe'+ (aq)+e — Fe2+(aq) N2(9)+4 H20(1)+44 → N2H4(aq)+4 OH(aq) Eed=-1.16 V Answer the following questions about this cell. Write a balanced equation for the half-reaction that happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as written....
A galvanic cell is based on the following half-reactions: Fe2+ + 2e-→ Fe(s) Eº = -0.440...
A galvanic cell is based on the following half-reactions: Fe2+ + 2e-→ Fe(s) Eº = -0.440 V 2H+ + 2e-→ H2(g) Eº = 0.000 V where the iron compartment contains an iron electrode and [Fe2+] = 1.00 × 10-3 M and the hydrogen compartment contains a platinum electrode, PH2 = 1.00 atm , and a weak acid, HA, at an initial concentration of 1.00 M. If the observed cell potential is 0.320 V at 25ºC, calculate the Ka value for...
A standard galvanic cell is constructed in which a Cd2+ | Cd half cell acts as the cathode. Which of the following statements are correct? Hint: Refer to a table of standard reduction potentials. (Cho...
A standard galvanic cell is constructed in which a Cd2+ | Cd 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.) The anode reaction could be Fe -> Fe2+ + 2e-. The anode compartment could be Hg2+|Hg. The cathode reaction is Cd -> Cd2+ + 2e-. As the cell runs, anions will migrate from the Cd2+|Cd compartment to the other compartment. In the...
Consider a galvanic cell that uses Ca/Ca^2+ and Cd/Cd^2+ half-cell reactions. Which half-cell reaction occurs at...
Consider a galvanic cell that uses Ca/Ca^2+ and Cd/Cd^2+ half-cell reactions. Which half-cell reaction occurs at the anode At the cathode anode: cathode: What is the value of the standard cell potential
HIU Blud cell potential of a galvanic cell based on the following reduction half- reactions at...
HIU Blud cell potential of a galvanic cell based on the following reduction half- reactions at 25 °C Cd + 2e → Cd Eº - -0.403 V Pb2+2e → Pb Eº - -0.126 V where (Cd-) - 0.040 M and (Pb) - 0.400M (13.) A zinc electrode is submerged in an acidic 0.40 M Zn?' solution which is connected by a salt bridge to a 1.50 M Ag' solution containing a silver electrode. Determine the initial voltage of the cell...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential Fe+3(aq)...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential Fe+3(aq) +e− → Fe+2(aq) =E0red+0.771V 2H2O(l) +2e− → H2(g) + 2OH−(aq) =E0red−0.83V Answer the following questions about this cell. Write a balanced equation for the half-reaction that happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as written. Do you...
Two half-reactions are shown with their standard cell potentials. If a galvanic cell is constructed using...
Two half-reactions are shown with their standard cell potentials. If a galvanic cell is constructed using them, which electrode would be the anode, and what would the cell potential be? Fe2+ (aq) + 2e → Fe(s); E=-0.44 V Ag+(aq) + 1e → Ag(s); E=0.80 V O a. Iron, 1.24 V O b. Silver, 0.36 V O c. Iron, 0.36 V O d. Iron, -0.36 V O e. Silver, -0.36 V
A chemist designs a galvanic cell that uses these two half-reactions: standard reduction potential E+0.771 V...
A chemist designs a galvanic cell that uses these two half-reactions: standard reduction potential E+0.771 V red =-0.13 V half-reaction Fe3+(aq)+e- → Fe2+(aq) CrO-(aq) +4 H.,0@t 3e-→ Cr(OH) 3(s)+5 OHJaq) Answer the following questions about this cell Write a balanced equation for the half-reaction that happens at the cathode Write a balanced equation for the half-reaction that happens at the anode Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as...
Question 10 of 11 For the galvanic (voltaic) cell Cd2+ (aq) + Fe(s) — Cd(s) +...
Question 10 of 11 For the galvanic (voltaic) cell Cd2+ (aq) + Fe(s) — Cd(s) + Fe2(aq) (E° = 0.0400 V), what is the ratio [Fe2+1/[Cd2+] when E = 0.002 V? Assume T is 298 K (1 2 3
A chem igns a galvanic cell that uses these two half reactions: standard reduction potential half-reaction (aq)+4 H,0(1)+3e" → Cr(OH)2(3)+50H (aq) cro Ered=-0.13 V Fe?+ (aq)+e → Fe2+ (aq) E = +0.771 V Answer the following questions about this cell. 0-0 0 Write a balanced equation for the half-reaction that happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. X 5 Write a balanced equation for the overall reaction that powers the cell....
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential = +0.771 V Fe'+ (aq)+e — Fe2+(aq) N2(9)+4 H20(1)+44 → N2H4(aq)+4 OH(aq) Eed=-1.16 V Answer the following questions about this cell. Write a balanced equation for the half-reaction that happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as written....
Consider a galvanic cell that uses Ca/Ca^2+ and Cd/Cd^2+ half-cell reactions. Which half-cell reaction occurs at the anode At the cathode anode: cathode: What is the value of the standard cell potential
HIU Blud cell potential of a galvanic cell based on the following reduction half- reactions at 25 °C Cd + 2e → Cd Eº - -0.403 V Pb2+2e → Pb Eº - -0.126 V where (Cd-) - 0.040 M and (Pb) - 0.400M (13.) A zinc electrode is submerged in an acidic 0.40 M Zn?' solution which is connected by a salt bridge to a 1.50 M Ag' solution containing a silver electrode. Determine the initial voltage of the cell...
Two half-reactions are shown with their standard cell potentials. If a galvanic cell is constructed using them, which electrode would be the anode, and what would the cell potential be? Fe2+ (aq) + 2e → Fe(s); E=-0.44 V Ag+(aq) + 1e → Ag(s); E=0.80 V O a. Iron, 1.24 V O b. Silver, 0.36 V O c. Iron, 0.36 V O d. Iron, -0.36 V O e. Silver, -0.36 V
A chemist designs a galvanic cell that uses these two half-reactions: standard reduction potential E+0.771 V red =-0.13 V half-reaction Fe3+(aq)+e- → Fe2+(aq) CrO-(aq) +4 H.,0@t 3e-→ Cr(OH) 3(s)+5 OHJaq) Answer the following questions about this cell Write a balanced equation for the half-reaction that happens at the cathode Write a balanced equation for the half-reaction that happens at the anode Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as...
Question 10 of 11 For the galvanic (voltaic) cell Cd2+ (aq) + Fe(s) — Cd(s) + Fe2(aq) (E° = 0.0400 V), what is the ratio [Fe2+1/[Cd2+] when E = 0.002 V? Assume T is 298 K (1 2 3
Most questions answered within 3 hours.
-
Assume that in a hydrogen atom, the electron circles the nucleus
in a circle of radius...
asked 9 minutes ago -
Evelyn incorporates her sole proprietorship, transferring it to
newly formed Papaya Corporation. The assets transferred have...
asked 1 minute ago -
A
752 mL sample of water was placed in a 1000 gram pan of aluminum.
The...
asked 2 minutes ago -
1 point) Given the significance level α=0.01 find the following:
(a) left-tailed z value z= (b)...
asked 4 minutes ago -
Calculate the expected value, the variance, and the standard
deviation of the given random variable X....
asked 5 minutes ago -
Describe two obstacles that makes fixing atmospheric nitrogen
difficult.
asked 14 minutes ago -
T
F 53) Most differences
between human groups are the result of biology rather than
culture....
asked 19 minutes ago -
A 5.20 mW helium neon laser emits a visible laser beam with a
wavelength of 633...
asked 22 minutes ago -
Assignment:
Your
organization has made a strategic decision
to
outsourcework
currently performed in house. You have...
asked 21 minutes ago -
A hospital performs 100 surgeries per week. The probability that
complications after surgery occur is 10%....
asked 21 minutes ago -
In preparing its cash flow statement for the year ended December
31, 2018, Green Co. gathered...
asked 23 minutes ago -
Donna is 18 years old and full time accounting student.She is
saving for an overseas holiday...
asked 24 minutes ago