How to use the gibbs energy from cell potential calculator
Find the Gibbs free energy change of an electrochemical reaction from its cell potential. Enter electrons transferred, cell potential in the fields above; the gibbs free energy change, spontaneity are computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “ΔG = -nFE”, “Gibbs from voltage”, “is the cell reaction spontaneous”, “calculate gibbs energy from cell potential”, “find gibbs free energy change”.
Formula
Variables
- n — Electrons transferred
- E — Cell potential (V)
Worked example
With electrons transferred = 2, cell potential = 1.1 V, the calculator gives gibbs free energy change ≈ -212.2677 kJ/mol; spontaneity ≈ Spontaneous (negative ΔG) text.
Frequently asked questions
What is the gibbs energy from cell potential calculator used for?
Find the Gibbs free energy change of an electrochemical reaction from its cell potential. It helps with questions such as “ΔG = -nFE”, “Gibbs from voltage”, “is the cell reaction spontaneous”.
What is the formula for the gibbs energy from cell potential calculation?
Gibbs free energy change (kJ/mol) = -n × FARADAY × E / 1000. Spontaneity (text) = E>0?"Spontaneous (negative ΔG)":"Non-spontaneous (positive ΔG)". Here n is electrons transferred, E is cell potential (V).
What inputs do I need for the gibbs energy from cell potential calculator?
You need electrons transferred, cell potential in V. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the gibbs energy from cell potential calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the gibbs energy from cell potential result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.