Reduction Potential using Nernst Equation Calculator

Reduction Potential Calculator

Calculate the reduction potential using the Nernst Equation:
\[ E = E^\circ – \frac{RT}{nF}\ln Q \]

* Enter the standard reduction potential \( E^\circ \) (V), number of electrons \( n \), reaction quotient \( Q \), and temperature \( T \) (K).

Step 1: Enter Parameters

Example: 0.80 V

Example: 2

Example: 10

Example: 298.15 K (25°C)

Derived Formula: \( E = E^\circ – \frac{RT}{nF}\ln Q \)


Practical Example:
For \( E^\circ = 0.80\,\text{V} \), \( n = 2 \), \( Q = 10 \), and \( T = 298.15\,\text{K} \):
\( \frac{RT}{F} \approx 0.0257\,\text{V} \) so \( \frac{RT}{nF} \approx 0.01286\,\text{V} \).
Then, \( E \approx 0.80 – 0.01286\,\ln(10) \approx 0.80 – 0.0296 \approx 0.7704\,\text{V}. \)