Galvanic Cells

Step 1: Understanding the Concept:

E%5E%7B%5Ccirc%7D_%7B%5Ctext%7Bcell%7D%7D%20%3D%20E%5E%7B%5Ccirc%7D_%7B%5Ctext%7Bcathode%7D%7D%20-%20E%5E%7B%5Ccirc%7D_%7B%5Ctext%7Banode%7D%7D

.

Step 2: Detailed Explanation:
Convert Zn oxidation potential to reduction potential:
Zn

%5E%7B2%2B%7D

+ 2e

%5E-

→ Zn;

E%5E%7B%5Ccirc%7D%20%3D%20-0.76

V.
Fe

%5E%7B2%2B%7D

+ 2e

%5E-

→ Fe;

E%5E%7B%5Ccirc%7D%20%3D%20%2B0.41

V.
Now apply formula:

E%5E%7B%5Ccirc%7D_%7B%5Ctext%7Bcell%7D%7D%20%3D%20E%5E%7B%5Ccirc%7D_%7B%5Ctext%7Bcathode%7D%7D%20-%20E%5E%7B%5Ccirc%7D_%7B%5Ctext%7Banode%7D%7D%20%3D%20(-0.76)%20-%20(0.41)%20%3D%20-0.35%5C%20%5Ctext%7BV%7D

Step 3: Final Answer:
-0.35 V

Chapter Questions
1 MCQs