joule per mole kelvin
Molar entropyexact by definition
The joule per mole per kelvin is the coherent SI unit of molar entropy and molar heat capacity, and its factor of 1 is exact. The gas constant R is 8.314 J/(mol·K) in these units, and standard molar entropies of common substances run from about 2.4 for diamond to 200 or more for gases. The kelvin here is a temperature interval, so it may be used with Celsius differences without conversion.
Watch out: Molar entropy and molar heat capacity share this unit but are different quantities. Standard entropies are absolute values referred to zero at absolute zero by the third law; heat capacities describe how energy content responds to temperature.
| 1 | 1 |
One joule per mole kelvin in every molar entropy unit
| 1 | joule per mole kelvin (J/(mol·K))this unit | |
| 1 | joule per mole Celsius (J/(mol·°C)) | |
| 1 | kilojoule per kilomole kelvin (kJ/(kmol·K)) | |
| 0.239006 | calorie per mole kelvin (cal/(mol·K)) | |
| 0.239006 | entropy unit (e.u.) | |
| 0.238846 | BTU per pound-mole Rankine (BTU/(lb-mol·°R)) | |
| 0.120272 | Boltzmann constant per particle (kB/particle) | |
| 0.001 | kilojoule per mole kelvin (kJ/(mol·K)) |
Solvers that use molar entropy