How to use the equilibrium constant from δg calculator
Find K from standard Gibbs free energy. Enter standard δg°, temperature in the fields above; the equilibrium constant k, log10(k) are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- G — Standard ΔG° (kJ/mol)
- T — Temperature (K)
Worked example
With standard δg° = -33 kJ/mol, temperature = 298.15 K, the calculator gives equilibrium constant k ≈ 604,435.4; log10(k) ≈ 5.78135.
Frequently asked questions
What is the formula for the equilibrium constant from δg calculation?
Equilibrium constant K = exp(-G × 1000 / (RGAS × T)). log10(K) = log10([Equilibrium constant K]). Here G is standard δg° (kJ/mol), T is temperature (K).
What inputs do I need for the equilibrium constant from δg calculator?
You need standard δg° in kJ/mol, temperature in K. 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 this 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 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.