Question

Answer the question below regarding the reaction, Pb+2(aq) + 2Ag(s) → Pb(s) + 2Ag+(aq) a. Use...

Answer the question below regarding the reaction, Pb+2(aq) + 2Ag(s) → Pb(s) + 2Ag+(aq) a. Use the standard reduction potentials in the textbook to calculate the Eocell and determine whether this reaction would occur in a voltaic cell or an electrolytic cell. b. Use Eocell to calculate Kc for this reaction at 25oC. c. Use Eocell to calculate Go for this reaction (the o symbol denotes standard conditions; what temperature is standard conditions?)

Homework Answers

Answer #1

Pb+2(aq) + 2Ag(s) → Pb(s) + 2Ag+(aq)

oxidation : 2 Ag -----> 2 Ag+ + 2e-

Reduction : Pb+2 + 2e- ------> Pb

E0 cell = E0 cathode - E0 anode

E0 cell = -0.13 - 0.80

E0 cell = -0.93

Since the reduction potensial value of Ag is higher than the Pb , So Ag under go oxidation and Pb under go reduction.

Hence the reaction possible in electrolytic cell not in voltoic cell.

dG0 = -nFE0 cell

dG0 = - 2 * 96500 * (-0.93)

dG0 = 179.49 kJ so from dG value the reaction is endo thermic reaction and it is possible only in electrolytic cell.

dG0 = -2.303RT logKeq

179490 = -2.303 * 8.314 * 298 log K

Keq = 3.4898 * 10^-32

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
Part A Calculate the equilibrium constant at 25 ∘C for the reaction Fe(s)+2Ag+(aq)→Fe2+(aq)+2Ag(s) Standard Reduction Potentials...
Part A Calculate the equilibrium constant at 25 ∘C for the reaction Fe(s)+2Ag+(aq)→Fe2+(aq)+2Ag(s) Standard Reduction Potentials at 25 ∘C Fe2+(aq)+2e−→Fe(s) E∘= −0.45 V Ag+(aq)+e−→Ag(s) E∘= 0.80 V
Calculate the standard cell potential for each of the electrochemical cells. Part A 2Ag+(aq)+Pb(s)?2Ag(s)+Pb2+(aq) Express your...
Calculate the standard cell potential for each of the electrochemical cells. Part A 2Ag+(aq)+Pb(s)?2Ag(s)+Pb2+(aq) Express your answer using two significant figures. Part B 2ClO2(g)+2I?(aq)?2ClO?2(aq)+I2(s) Express your answer using two significant figures. Part C O2(g)+4H+(aq)+2Zn(s)?2H2O(l)+2Zn2+(aq)
Given the cell reaction : 2 Cl – (aq) + Cu2+(aq)→ Cl2 (aq) + Cu (s)...
Given the cell reaction : 2 Cl – (aq) + Cu2+(aq)→ Cl2 (aq) + Cu (s) a) As written, is the cell galvanic or electrolytic? b) Calculate E°cell. c) Calculate ΔG°. 3. Using the standard reduction potentials given in Appendix of your text book, calculate the cell potential (E°cell ) at 298 K for each of the following reactions. (A) Br2 (aq) + 2 ClV (aq) → 2BrV (aq) + Cl2 (g) (B) A Galvanic Cell with the SHE and...
1. The standard reduction potential for the reduction of Eu3+(aq) to Eu2+(aq) is -0.43 V. Using...
1. The standard reduction potential for the reduction of Eu3+(aq) to Eu2+(aq) is -0.43 V. Using Appendix E in the textbook, which of the following substances is capable of reducing Eu3+(aq) to Eu2+(aq) under standard conditions? a. Al B. Co C. H2O D. N2H5 E. H2C2O4 2. How many minutes will it take to plate out 4.56 g of Ni metal from a solution of Ni2+ using a current of 40.5 amps in an electrolytic cell? 3. Using the standard...
Calculate the potential at 25o C for the following cell reaction. a) Cu (s)+ 2Ag (aq)...
Calculate the potential at 25o C for the following cell reaction. a) Cu (s)+ 2Ag (aq) --> Cu2+ (aq) + 2Ag (s) b) 3Cu2+ (aq) +2Al (s) --> 3Cu (s) +2Al3+
The following reactions take place in a galvanic cell: (i) Cu2+(aq)+ Ni (s)→ Cu(s) + Ni2+(aq)...
The following reactions take place in a galvanic cell: (i) Cu2+(aq)+ Ni (s)→ Cu(s) + Ni2+(aq) (ii) 2Ag+ (aq) +H2 (g) → 2Ag(s) +2H+ (aq) (iii) Cl2 (g) + Sn2+ (aq) → Sn4+ (aq) + 2Cl- (aq) (a) For each of the above spontaneous cell reactions, write the electrochemical cell using standard cell notation. (b) Use the standard reduction potentials below to evaluate EƟcell for the overall cell reaction taking place in (iii): Cl2(g) + 2e- → 2Cl- (aq) E...
A voltaic cell is constructed that is based on the following reaction: Sn2+(aq)+Pb(s)?Sn(s)+Pb2+(aq). If the concentration...
A voltaic cell is constructed that is based on the following reaction: Sn2+(aq)+Pb(s)?Sn(s)+Pb2+(aq). If the concentration of Sn2+ in the cathode compartment is 1.20M and the cell generates an emf of 0.25V , what is the concentration of Pb2+ in the anode compartment?
1. Calculate the equilibrium constant, K, for the reaction in the Galvanic Pb-Cu cell. (Report your...
1. Calculate the equilibrium constant, K, for the reaction in the Galvanic Pb-Cu cell. (Report your answer in scientific notation to three significant figures. Use * for the multiplication sign and ^ to designate the exponent.) Cu+ (aq) + Pb (s) → Cu (s) + Pb2+ (aq) Eocell = 0.647 V K = 2. For the reaction Mg (s) + Ni2+ (aq) →→ Mg2+ (aq) + Ni (s),    Eocell = 2.629 V.   Calculate the cell potential at T = 50.0oC...
Calculate E°cell for the following cell line notation:    Use Table 18.1 for Std. Reduction Potentials on...
Calculate E°cell for the following cell line notation:    Use Table 18.1 for Std. Reduction Potentials on pg. 709 (10th Ed.)                                                                 Ca(s) | Ca 2+(aq)   ||      Cd2+ (aq) | Cd(s) Report answer as #.## with no unit (i.e. 1.59) Is this cell a voltaic/galvanic    or     electrolytic    cell?
A voltaic cell is constructed so its based on the reaction Sn2+(aq)+Pb(s)=Sn(s)+Pb2+(aq) a. If the concentration...
A voltaic cell is constructed so its based on the reaction Sn2+(aq)+Pb(s)=Sn(s)+Pb2+(aq) a. If the concentration of Sn2+ in the cathode compartment is 1.00 M and the cell generates an emf of 0.15 V , what is the concentration of Pb2+ in the anode compartment? b. If the anode compartment contains [SO2−4]= 1.20 M in equilibrium with PbSO4(s), what is the Ksp of PbSO4?