Flashcards
Unit 3 : Chromatography
Cards in this deck (7)
- 1What Is Chromatography?Chromatography is a method of separating and analysing a mixture of soluble
chemical substances. - 2How What Is The Most Common Type Of Chromatography?Paper Chromatography
- 3What Are The Uses of Chromatography?Chromatography can be used to follow the course of a chemical reaction or to
establish the products of a chemical reaction.
It can also be used to identify additives in foods, analyse fibres found at a crime
scene and fingerprinting - 4What Are The Two Stages In Paper Chromatography?There are two stages in paper chromatography; the Mobile Phase and the
Stationary Phase. - 5Why Does Separation Occur?Separation of the mixture occurs due to the polarity and size of the molecules
within the mixture. Depending on what solvent is used depends on how the
molecules behave. - 6What Is The Retention Factor (Rf) Value?RF=Distance from baseline to the spot
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Distance from the baseline to the solvent front - 7What Can It Be Used For?The Rf factor can be used to compare the different components found in a sample.
The Rf values of a mixture being tested can be compared with known samples.
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- Cfe Higher Cfe Higher | Chemistry Flashcards on Unit 3 : Chromatography, created by Ellie Potellie on 26/11/2018.
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- Ellie Potellie · Nov 2018
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- Nov 26, 2018
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