Questions and Answers
Liquid chromatography separates vaporized samples with a carrier gas.
False
Paper chromatography uses a paper strip as the stationary phase.
True
Capillary action refers to the movement of a liquid due to the force of gravity alone.
False
Thin-layer chromatography uses a glass plate covered with a thin layer of alumina or silica gel as its stationary phase.
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Solubility is the extent to which a material can dissolve into a solid.
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Study Notes
Types of Chromatography
- Liquid Chromatography involves a liquid solvent (mobile phase) and a column of solid beads (stationary phase) to separate liquid samples.
- Gas Chromatography separates vaporized samples using a carrier gas (mobile phase) and a column of liquid or solid beads (stationary phase).
- Paper Chromatography separates dried liquid samples with a liquid solvent (mobile phase) and a paper strip (stationary phase).
- Thin-Layer Chromatography involves a liquid solvent (mobile phase) and a glass plate with a thin layer of alumina or silica gel (stationary phase) to separate dried liquid samples.
Principles of Paper Chromatography
- Capillary Action is the movement of liquid within porous materials due to adhesion, cohesion, and surface tension forces, allowing liquids to move up filter paper despite gravity.
- Solubility is the degree to which a material (solute) dissolves into a solvent, with like dissolving like, enabling separation of solutes through different solvent combinations.
- Separation of components in chromatography depends on solubility in the mobile phase and affinity to both the mobile phase and stationary phase.
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Description
This quiz covers different types of chromatography, including liquid, gas, paper, and thin-layer chromatography. Learn about the mobile and stationary phases in each type.
