Flashcards
Tests for functional groups
Cards in this deck (6)
- 1Test for alkeneReagents: Bromine water
Positive Test: decolourises (from brown) - 2Test for haloalkaneReagents: add NaOH and warm, acidify with HNO3 (to remove carbonate ions) then add AgNO3.
Positive Test: white precipitate (chloride), cream precipitate (bromide), yellow precipitate (iodide) - 3Test for alcahol (primary or secondary)Reagents: Acidified Potassium Dichromate
Positive Test: Orange to green - 4Test for aldehydeReagents: Fehlings solution
Positive test: Blue to brick red precipitate
OR
Reagents: Tollens solution
Positive Test: Silver mirror formed - 5Test for carboxyllic acidReagents: Na2CO3
Positive Test: Effervescense - 6Test for acylchlorideReagents: Add acidified silver nitrate
Positive test: Vigorous reaction and white precipitate
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- A - level chemistry AQA tests for functional groups that you need to know
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- Wannie Chisala
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