The electrochemical cell potential is illustrated by the image below.

To compute for electrochemical cell potential, two essential parameters are needed and these parameters are **Positive Cell Potential (V _{2}°)** and

**Negative Cell Potential (V**

_{1}°).The formula for calculating electrochemical cell potential:

ΔV° = V_{2}° – V_{1}°

Where:

ΔV° = Electrochemical Cell Potential

V_{2}° = Positive Cell Potential

V_{1}° = Negative Cell Potential

Given an example;

Find the electrochemical cell potential when the positive cell potential is 14 and the negative cell potential is 7.

This implies that;

V_{2}° = Positive Cell Potential = 14

V_{1}° = Negative Cell Potential = 7

ΔV° = V_{2}° – V_{1}°

ΔV° = 14 – 7

ΔV° = 7

Therefore, the **elecreochemical cell potential **is **7 V.**

**Calculating the Positive Cell Potential when the Electrochemical Cell Potential and the Negative Cell Potential is Given.**

V_{2}° = ΔV° + V_{1}°

Where:

V_{2}° = Positive Cell Potential

ΔV° = Electrochemical Cell Potential

V_{1}° = Negative Cell Potential

Let’s solve an example;

Find the positive cell potential when the electrochemical cell potential is 20 and the negative cell potential is 14.

This implies that;

ΔV° = Electrochemical Cell Potential = 20

V_{1}° = Negative Cell Potential = 14

V_{2}° = ΔV° + V_{1}°

V_{2}° = 20 + 14

V_{2}° = 34

Therefore, the **positive cell potential **is **34 V.**

Continue reading How to Calculate and Solve for Electrochemical Cell Potential | Corrosion