Question

Assume you are constructing a Galvanic cell based on the half-reactions between Zn2+(aq)/Zn(s) and Ag+(aq)/Ag. The...

Assume you are constructing a Galvanic cell based on the half-reactions between Zn2+(aq)/Zn(s) and Ag+(aq)/Ag. The standard reduction potentials are given below. Ag+ (aq) + e- Ag (s) Eo = 0.80 V Zn2+ (aq) + 2 e- Zn(s) Eo = -0.76 V

Write a balanced chemical REDOX equation and determine the Eo for the cell.

What will be observed at the cathode and at the anode?

Is the reaction thermodynamically favored? Explain.

Homework Answers

Answer #1

Oxidation : Zn   ---------------> Zn+2 + 2e-

Reduction : 2Ag+ + 2 e- -------------> 2Ag

Overall balanced chemical redox reaction :

Zn + 2 Ag+      ----------------> Zn+2    + 2 Ag

Cathode : Ag

Anode : Zn

Eocell = Eo red - Eoox

           = 0.80 - (- 0.76)

           = 1.56 V

the reaction thermodynamically favored. becuase Eocell is positive

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Short Answer 1) Reduction half-reactions with corresponding standard half-cell potentials are shown below. Zn2+(aq) + 2...
Short Answer 1) Reduction half-reactions with corresponding standard half-cell potentials are shown below. Zn2+(aq) + 2 e‐ → Zn(s) E° = ‐ 0.76 V Al3+(aq) + 3 e‐ → Al(s) E° = ‐ 1.66 V The standard potential for the galvanic cell that uses these two half-reactions is ________ V. 2)In the galvanic cell represented by the shorthand notation shown below, Cd(aq)|Cd2+(aq)|| I2(g)|I-(aq)|Pt(s) the inert electrode is ________, and the balanced cathode half-reaction reaction is ________.
A galvanic cell consists of one half-cell that contains Ag(s) and Ag+(aq), and one half-cell that...
A galvanic cell consists of one half-cell that contains Ag(s) and Ag+(aq), and one half-cell that contains Cu(s) and Cu2+(aq). Write out the half-reactions occurring and state which reaction is occurring at the anode and which is occurring at the cathode. Please explain mathemcatically and in words. Thanks!
Given: Ag+(aq) + e-→Ag(s)    E° = +0.799 V Cr3+(aq) + e-Cr2+(aq.) Eo= - 0.41 V Ni2+(aq)...
Given: Ag+(aq) + e-→Ag(s)    E° = +0.799 V Cr3+(aq) + e-Cr2+(aq.) Eo= - 0.41 V Ni2+(aq) + 2 e-→Ni(s) E° = -0.267 V Generate two voltaic cells using the above 3 reactions. Show the anode and cathode half-reactions and the overall cell reactions and calculate Eo cell values.
The following cell has a potential of 0.040 V at 25°C. Zn(s)∣Zn2+(aq) || Cr3+(0.020 M) |...
The following cell has a potential of 0.040 V at 25°C. Zn(s)∣Zn2+(aq) || Cr3+(0.020 M) | Cr(s) What is the concentration of Zn2+? The standard reduction potentials are given below: Zn2+(aq) + 2e− → Zn(aq) Eo = − 0.760 Cr3+(aq) + 3e− → Cr(s) V Eo = − 0.740 V
The half-cell reactions that occur in a typical flashlight battery are: Zn(s) -t Zn2 +(aq) +2...
The half-cell reactions that occur in a typical flashlight battery are: Zn(s) -t Zn2 +(aq) +2 e- 2 Mn02(s) + Zn2 +(aq) + 2 e- -t ZnMn204(s) Write a chemical equation describing the net cell reaction.
Which metal cation can oxidize Fe(s) to Fe2+(aq) (i.e. which metal cation is a stronger oxidizing...
Which metal cation can oxidize Fe(s) to Fe2+(aq) (i.e. which metal cation is a stronger oxidizing agent)? (A) Al3+ (B) Ag+ (C) Mn2+ (D) Zn2+ Some relevant standard reduction potentials: Ag+(aq) + e- → Ag (s) Eo= +0.80 V Fe2+(aq) + 2e- → Fe (s)    Eo= -0.45 V Zn2+(aq) + 2e- → Zn(s)    Eo= -0.76 V Mn2+(aq) + 2e- → Mn (s)    Eo= - 1.18 V Al3+(aq) + 3e- →Al(s) Eo= -1.66 V
A standard galvanic cell is constructed with Co2+|Co and Ag+|Ag half cell compartments connected by a...
A standard galvanic cell is constructed with Co2+|Co and Ag+|Ag half cell compartments connected by a salt bridge. Which of the following statements are correct? Hint: Refer to a table of standard reduction potentials. (Choose all that apply.) A- Ag+ is reduced at the cathode. B- Ag is oxidized at the anode. C- The cathode compartment is the Co2+|Co compartment. D- In the external circuit, electrons flow from the Ag+|Ag compartment to the Co2+|Co compartment. E- As the cell runs,...
A) A galvanic cell Zn(s)|Zn2+(aq) || Ni2+(aq)|Ni(s) is constructed using a completely immersed Zn electrode that...
A) A galvanic cell Zn(s)|Zn2+(aq) || Ni2+(aq)|Ni(s) is constructed using a completely immersed Zn electrode that weighs 43.2 g and a Ni electrode immersed in 503 mL of 1.00 M Ni2+(aq) solution. A steady current of 0.0555 A is drawn from the cell as the electrons move from the Zn electrode to the Ni electrode. Which reactant is the limiting reactant in this cell? Enter symbol ___________ How long does it take for the cell to be completely discharged? _____s...
Consider the following half-reactions: Ag+ (aq) + e- --> Ag(s) E cell = 0.80 VV Cu2+(aq)...
Consider the following half-reactions: Ag+ (aq) + e- --> Ag(s) E cell = 0.80 VV Cu2+(aq) + 2e- --> Cu(s) E cell = 0.34 V Pb2+(aq) + 2e- --> Pb(s) E cell = -0.13 V Fe2+(aq) + 2e- --> Fe(s) E cell = -0.44 V Al3+ (aq) + 3e- --> Al(s) E cell = -1.66 V Which of the above metals or metal ions will oxidize Pb(s)? a. Ag+(aq) and Cu2_(aq) b. Ag(s) and Cu(s) c. Fe2+(aq) and Al3+(aq) d....
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential N2(g)+4H2O(l)+4e−→...
A chemist designs a galvanic cell that uses these two half-reactions: half-reaction standard reduction potential N2(g)+4H2O(l)+4e−→ N2H4(aq)+4OH−(aq) E0red = −1.16V Zn+2(aq)+2e−→ Zn(s) E0red = −0.763V 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 have enough...