Calculate the value of Ecell:
Problem:
What will be the value of Ecell when silver and copper electrodes with unit activities in contact, given that E0 Cu 2+/Cu = + 0.337 V and E0 Ag /Ag= + 0.799 V
Answer:
Cell diagram may be written as:
Cu | Cu2+ (a = 1) ||Ag + (a = 1) |Ag
On unit activities of reactants and products
Ecell = E0cell
= E0Ag+ / Ag - Eo Cu2+ /Cu
= 0.799 -0.337 V
= 0.462 V.