Boiling Point

The Main Idea

The main idea of this page is a description of the property of matter that is it's boiling point. In short, the boiling point is the temperature at which the vapor pressure of a liquid is equal to the pressure on the liquid.

A Mathematical Model

The main mathematical model for this property is the boiling point elevation equation. This equation takes into account the effect that adding a solute to a solvent has on it's boiling point. For example ΔT = i K_bm, where ΔT is the temperature difference that arises from adding the solute, i is the van 't Hoff factor which is equivalent to the number of substances a molecule ionizes into (i.e NaCl is 2, sugar is 1, MgCl₂ is 3), K_b is a thermodynamic constant relating to the solvent, and m is the molality.

A Computational Model

Creating a computational model for this equation would be pretty easy, you would first have to initialize the constants, which would be i, K_b, and either m or the information that goes into calculating molality.

K = ???

m = moles of solute/mass of solvent

i = ???

ΔT = i*K*m

Examples

An example of an easy, middling and difficult problem are included in the link below. An easy example would be problems 3-5, a middling example would be problems 6, 8, 9, and 10. A difficult example would be the bonus problems.

Boiling Point Elevation

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See also

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