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Summary organic chemistry chromatography notes module 6

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A2 Unit F324 - Rings, Polymers and Analysis
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notes on chromatography in a level chemistry, including diagrams from the kerboodle textbook and gas and TLC chromatography

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OCR A
MODULE 6



Chromatography
CHEMISTRY
___


Notes

Chromatography

Separate individual components in a mixture

Stationary phase: does not move, solid or liquid supported on a solid

Mobile phase moves, liquid or gas

Analysis of drugs, plastics, flavourings, air samples, forensics

Thin layer chromatography

How many components in a mixture

TLC plate: plastic sheet or glass, coated with a thin layer of of solid adsorbent silica = stationary
phase

Components have different affinities for the adsorbent and bind with different strengths to its
surface

Adsorption: silica holds substances to its surface

Separation: relative adsorption of substances with the stationary phase

Calculate retention factor (Rf)

Compare Rf with known values recorded using same solvent system and adsorbent
Connected book
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Rob Ritchie, Emma Poole OCR A Level Chemistry A
Publisher: 2016 ISBN: 9780198378587 Edition: Unknown

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Study Level
A/AS Level
Subject
Chemistry A
Summarized whole book?
No
Which chapters are summarized?
29 - chromatography
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June 17, 2024
Number of pages
3
Written in
2023/2024
Type
Summary
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Subjects

  • chromatography
  • gas
  • tlc
  • kerboodle
  • textbook
  • analytical techniques
  • notes

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