ΔG° and K Calculator
🔥 Thermochemistry & Bonding. Use the ΔG° and K formula to find δg°, temperature, equilibrium constant k: pick the value you want, type the others, and the answer updates as you go.
Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.
What each letter means
| Quantity | Unit |
|---|---|
| ΔG° | kJ/mol |
| Temperature | K |
| Equilibrium constant K | no unit |
Worked example
Find the δg° when Temperature = 298 K, Equilibrium constant K = 680000.
Using Δ G° = -RTln K: ΔG° = -33.275 kJ/mol.
Frequently asked questions
What is the formula for ΔG° and K?
Δ G° = -RTln K.
What do the letters stand for, and what units are used?
ΔG° in kJ/mol, Temperature in K, Equilibrium constant K.
How do you calculate δg°?
Put the values into Δ G° = -RTln K. For example, with Temperature = 298 K, Equilibrium constant K = 680000, δg° = -33.275 kJ/mol.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (δg°, temperature, equilibrium constant k) and fill in the others: it rearranges the formula for you.
