Calculadora de Energía Libre de Gibbs — Fórmula
## Gibbs Free Energy
### Formula
**ΔG = ΔH − TΔS**
Where:
- **ΔG** = Gibbs free energy change (kJ)
- **ΔH** = enthalpy change (kJ)
- **T** = temperature (K)
- **ΔS** = entropy change (J/K, converted to kJ/K by dividing by 1000)
If ΔG < 0, the reaction is spontaneous. If ΔG > 0, it is non-spontaneous. If ΔG = 0, the system is at equilibrium.
### Formula
**ΔG = ΔH − TΔS**
Where:
- **ΔG** = Gibbs free energy change (kJ)
- **ΔH** = enthalpy change (kJ)
- **T** = temperature (K)
- **ΔS** = entropy change (J/K, converted to kJ/K by dividing by 1000)
If ΔG < 0, the reaction is spontaneous. If ΔG > 0, it is non-spontaneous. If ΔG = 0, the system is at equilibrium.
Ejemplo Resuelto
A reaction with ΔH = -100 kJ and ΔS = -50 J/K at 298 K.
- ΔG = ΔH - TΔS
- ΔG = -100 - (298 × (-50)/1000)
- ΔG = -100 - (-14.9)
- ΔG = -100 + 14.9
- ΔG = -85.1 kJ (spontaneous)