Entropy Change Calculator Formula
Understand the math behind the entropy change calculator. Each variable explained with a worked example.
Formulas Used
Entropy Change
entropy_change = heat / temperatureVariables
| Variable | Description | Default |
|---|---|---|
heat | Heat Transferred(J) | 1000 |
temperature | Temperature(K) | 300 |
How It Works
Entropy Change
Entropy measures the disorder or unavailability of energy in a system.
Formula
DeltaS = Q / T
for a reversible process at constant temperature. Positive DeltaS means entropy increases (heat absorbed). The second law states that total entropy of an isolated system never decreases.
Worked Example
1000 J of heat absorbed at 300 K.
heat = 1000temperature = 300
- 01DeltaS = Q / T
- 02DeltaS = 1000 / 300
- 03DeltaS = 3.333 J/K
Ready to run the numbers?
Open Entropy Change Calculator