Molecular hydrogen
Thermodynamics at 298.15 K and standard pressure
| Enthalpy | ||
| Property | Value | Unit |
| Translational | 6.20 | kJ mol-1 |
| Rotational | 2.48 | kJ mol-1 |
| Vibrational | 26.78 | kJ mol-1 |
| Total (Trans. + Rot. + Vib.) | 35.46 | kJ mol-1 |
| Heat Capacity at Constant Pressure | ||
| Property | Value | Unit |
| Translational | 20.79 | J mol-1 K-1 |
| Rotational | 8.31 | J mol-1 K-1 |
| Vibrational | 0.00 | J mol-1 K-1 |
| Total (Trans. + Rot. + Vib.) | 29.10 | J mol-1 K-1 |
| Entropy | ||
| Property | Value | Unit |
| Translational | 117.49 | J mol-1 K-1 |
| Rotational | 11.76 | J mol-1 K-1 |
| Vibrational | 0.00 | J mol-1 K-1 |
| Total (Trans. + Rot. + Vib.) | 129.25 | J mol-1 K-1 |
| Other Properties | ||
| Property | Value | Unit |
| Heat of Formation | -55.98 | kJ mol-1 |