Inroganic chemsitry question--please only answer if you understand it and you ca

Question

Inroganic chemsitry question--please only answer if you understand it and you can answer it ENTIRELY. Please do not answer this question if you cannot answer it all.

I only need D and E.

2) Answer the following questions as they relate to the redox reaction below: C12 (g Fe2+ (aq) Fest (aq) Cl (aq) a. Write the oxidation half reaction for the redox reaction shown a b) rite the reduction half-real for the redox reaction shown above c) Use the reactions written above to determine the coefficie needed to e the redox equation. Place the appropriate coefficients in the branks d) Use Table 1 in the introduction, along with the half-reactions, to determine Eocell for the overall reaction (Assume the reaction is spontaneous as written). e) Use the Nernst equation to calculate the cell potential if [Fe21 0.20 M [Fe3+130.30 M, [Cl 30.10 M and P (C12) 31.0 atm at 25 oC.

Explanation / Answer

For the given unbalanced equation,

a) Oxidation half reaction,

Fe2+ ---> Fe3+ + e-

b) reduction half reaction,

Cl2 + 2e- ---> 2Cl-

c) Overall balanced equation,

Cl2(g) + 2Fe2+(aq) ---> 2Cl-(aq) + 2Fe3+(aq)

d) Eocell = Ecathode - Eanode

               = 1.36 - 0.77

               = 0.59 V

e) Using Nernst equation,

Ecell = Eocell - 0.0592/n logK

         = 0.59 - 0.0892/2 (0.3 x 0.2/0.2)^2

         = 0.64 V

(K = [Fe3+]^2.[Cl-]^2/[Cl2][Fe2+]^2)

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