Nernst 298K
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The Nernst 298K calculator determines the potential of an electrochemical cell under non-standard conditions using E = E° − 0.0592/n·log(Q). It accounts for the standard potential (E°), number of transferred electrons (n), and reaction quotient (Q) to predict the actual potential (E) at 25°C (298K). This tool is ideal for forecasting electrochemical cell behavior with varying concentrations.
The simplified 0.0592/n·log(Q) formula derives from the Nernst equation applied at standard temperature. The 0.0592 V value stems from Faraday's constant, temperature, and gas constant. The quotient Q depends on reactant and product concentrations at the measurement moment. The calculator requires accurate inputs of E°, n, and Q for reliable results.
Use this calculator to analyze galvanic cells, electrodes in non-ideal solutions, or reactions with concentration changes. Avoid using it at temperatures significantly different from 25°C, as the 0.0592 constant is specific to 298K. For other temperatures, manually adjust the constant or use a modified version of the equation.
Frequently asked questions
What is E° in the Nernst equation?
E° is the standard cell potential measured under ideal conditions (1 M concentrations, 1 atm pressure, 25°C). It represents the theoretical maximum potential of the reaction.
Why is 0.0592 used in the equation?
This value approximates the Nernst constant at 25°C (298K), derived from F·R·T, where F is Faraday's constant, R is the gas constant, and T is temperature in Kelvin.
How to convert natural logarithm (ln) to common logarithm (log)?
The equation uses base-10 logarithms. To convert ln to log, multiply the result by 2.303 for scale conversion.
Can I use this calculator for temperatures above 25°C?
No. The 0.0592 constant is specific to 298K. For other temperatures, recalculate the constant using (R·T)/(F·ln(10)).