# What sort of property is "boiling point elevation"?

##### 1 Answer
May 9, 2017

$\text{Boiling point elevation}$ is a so-called $\text{colligative property.}$

#### Explanation:

And by definition the effect depends on the number of particles in solution. We could use $\text{molarity}$, $m o l \cdot {L}^{-} 1$, to express the number of particles. But because molarity is dependent on temperature (i.e. solution can become LESS dense with increasing temperature), we typically use another concentration term, $\text{molality"-="moles of solute"/"kilogram of solvent}$ to express the number of particles per mass of solvent.

At LOW concentrations, $\text{molality}$ is equivalent to $\text{molarity}$.