Urgent Standard electrode potential calculation helpWatch
So lets say for example we have this:
So this is how i look at calculating the emf:
1) I look at both of the E values given to me and I see which path will give a more positive value. In this situation its going from Ag+ + e- ==> Ag
2) As this silver (I) ion is gaining electrons so the other one must be losing those electrons and so we will need to reverse the sign for the first one given to us Cr3+ +3 e- ==> Cr
3) Combine both of the values
So this will give us the positive value for E cell and therefore its feasible at the conditions given.
Anyone please confirm if my approach is correct or not, coz i ll mess up so badly if i m going in the wrong path. Your help will be really appreciated.