What is the value of the equilibrium constant at 25°C for the reaction between each of the following?
(a) Sn(s) and Pb2+(aq)
(b) Cr(s) and Cu2+(aq)
I have been unable to get either and have spent the last two hours attempting it. I have been using the equation K = 10^(nEcell/ 0.0592)
PLEASE HELP!!
3 answers
What are you using for the Ered Sn and Pb? Do you have any concentrations given or are you to assume 1 M concns?
That is part of what I am confused about. This is all I have, plus the half eqs, [Sn]2+ + 2e- <-> Sn (s) V -0.13 and [Pb]2+ + 2e- <-> Pb (s) V -0.126
It would have helped if you had shown you work. I get K = 1.36 and your equation looks ok to me. Anything else that might shed some light on the problem? The only possibility I have is that you and I may not be using the same E value.
1 answer