Stuck with a problem in electrochemistry

[johncena]

Homework Statement

A galvanic cell consisting of two silver electrodes,one in a saturated solution of AgBr and the other in a saturated solution of Ag₂CrO₄ is prepared.Calculate the value of E_cell at 298K Given Ksp(AgBr) = 5x10^-13 M² and
Ksp(Ag₂CrO₄)=2.4x10^-12M³

Homework Equations

to find conc from Ksp
and
Nernst equation

The Attempt at a Solution

I got the conc of Ag⁺ in both the solutions ... but i don't know how to substitute them...(means ...i don't know which comes in the numerator of the logarithm)
and Is the value of E⁰ to be taken as 0? How ?

pls help...

thanks in advance

 

[Borek]

Report the potential as positive. E0 cancels out, but technically you should use value for the Ag(s)/Ag⁺ system.

 

[johncena]

thank you sir...

i am getting it now...