kcal/mol
kilocalorie per mole
Molar energyexact by definition
The kilocalorie per mole is the traditional unit of chemical and biochemical energy, especially in North American organic chemistry and computational chemistry. Using the thermochemical calorie of exactly 4.184 J, one kcal/mol is exactly 4184 J/mol, and the factor is exact by definition of that calorie. Room temperature RT is about 0.6 kcal/mol, a number physical chemists keep close at hand.
Watch out: There are several calories in circulation, differing by roughly a part in a thousand. This catalog uses the thermochemical calorie of 4.184 J exactly, which is the convention in chemistry. The dietary Calorie with a capital C is a kilocalorie and belongs to a different conversation entirely.
| 1 kcal/mol | 4.184 kJ/mol |
Solvers that use molar energy