Chromatography and Functional Group Analysis (OCR A-Level Chemistry A): Flashcards
📚Flashcards
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10 cards from this deck
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Practise the cards
10 cards from this deck
Two phases in chromatography
Two phases in chromatography
Stationary phase (fixed) and mobile phase (moves)
Most common adsorbent in TLC
Most common adsorbent in TLC
Silica
Rf value formula
Rf value formula
Distance by component / distance by solvent front
Range of Rf values
Range of Rf values
Between 0 and 1 (no units)
What GC separates
What GC separates
Volatile organic compounds
Retention time in GC
Retention time in GC
Time for component to travel through column
Alkene test with bromine water result
Alkene test with bromine water result
Orange colour decolourised (becomes colourless)
Aldehyde test with Tollens' reagent result
Aldehyde test with Tollens' reagent result
Silver mirror forms
Carboxylic acid test with sodium carbonate result
Carboxylic acid test with sodium carbonate result
Effervescence (fizzing) occurs
Phenol test with bromine results
Phenol test with bromine results
Decolourised + white precipitate forms