熵变计算器 — 公式
## 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.
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.
计算示例
1000 J of heat absorbed at 300 K.
- DeltaS = Q / T
- DeltaS = 1000 / 300
- DeltaS = 3.333 J/K