Page 18 - Pharmaceutical Analytical Chemistry II - Pharm D- 02-06-07102

2- Calculation of Potentials of
Electrochemical Cells

At Non-Standard Conditions

EXAMPLE 1
Calculate the potential of the following cell:

CuCu2+(0.020 M)  Ag+ (0.020 M) Ag

Cu2+ + 2e– Cu(s) E0 = 0.337 V
Ag+ + e– Ag(s) E0 = 0.799 V

Ecell = EAg+/Ag – E Cu2+/Cu
Ecell = 0.698 – 0.286 = +0.412 V

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