Gasoplosbaarheid

Gases can dissolve in liquids, forming liquid-gas solutions like soft drinks containing carbon dioxide gas dissolved in water.

But, all gas-liquid interactions are not the same. For instance, HCl gas readily dissolves in water, forming hydrochloric acid, while oxygen is less soluble.

The vapor pressure of volatile components in a solution is governed by Henry's law and Raoult's law, which state that the vapor pressure is proportional to its mole fraction.

The difference is that Raoult's law uses the vapor pressure of the pure component as the proportionality constant, while Henry's law relies on an experimentally determined value.

On plotting vapor pressure against mole fraction, Raoult's law predicts pressures at high mole fractions.

Henry's law applies at low mole fractions, giving an approximately straight line.

Henry’s law relates to sparingly soluble gases in various solvents, such as water, where the dissolved gas concentration is usually low enough for the solution to be ideally dilute.

The solubility of most nonpolar gases in water decreases initially as temperature increases. However, depending on the gas and conditions, it increases sharply as the critical temperature of water i