Analytical dispersion

From WikiLectures

Dispersion system with particle size <1 nm (components not detectable optically, only analytically/chemically).

Continuous medium Dispersed material Analytical dispersion
Gas Gas Mixtures of gases, the partial pressures and volumes of the components add up during mixing
Liquid Mostly water vapour in the air, relative humidity is the ratio of the absolute humidity (kg of vapour in 1 m3) and the maximum humidity (absolute humidity when the air is saturated with water vapour) - stated in %
Solid Solid-in-gas mixture
Liquid Gas Gases dissolved in liquid – Henry's law
Liquid Mixtures of miscible liquids
Solid True solutions of solids (usually in water - sugar dissolved in water)

Solubility increases with increasing temperature, and when equilibrium is established, the substance ceases to dissolve and a saturated solution is formed.

When the saturated solution is cooled, either a supersaturated solution is formed or, in the presence of suitable condensation centers, a solid is eliminated.

Solid Liquid Water bounded to crystalline salt (which needs water to form a lattice and breaks down into powder when heated and dried)
Solid Solid solutions, e.g. glass


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