Calculate Ksp given electrochemistry data??

Question

Calculate the solubility product of silver iodide at 25°C given the following data:

E˚(V)

AgI(s) e– → Ag(s) I– –0.15

I2(s) 2e– → 2I– 0.54

Ag e– → Ag(s) 0.80

A. 2.9 × 10–3

B. 1.9 × 10–4

C. 2.1 × 10–12

D. 9.0 × 10–17

E. 2.4 × 10–24

Answer 1

Find the voltage (E[total]).

You want the equation

AgI(s) <--> Ag+(aq) + I-(aq)

Then use the reelation

ΔE = (RT/nF)lnK to find your answer, where

R= 8.314 J K^(-1) mol^(-1)

T = temperature in Kelvins = 298.15K

n = number of moles transferred in your balanced equation

F = 96500 J mol^(-1)

Plug and chug.

[Answer: see above]