BRAINCAKEAlcohols
Revision notes for Alcohols in Edexcel Chemistry (8CH0). Every lesson in BrainCake comes with R.E.C.I.P.E. recall steps, a quick check and spaced reviews.
- Classifying AlcoholsAlcohols contain the hydroxyl group, -OH, bonded to a saturated carbon atom.
- Reactions of AlcoholsAlcohols take part in several important types of reaction.
- Conversion to HalogenoalkanesThe -OH group of an alcohol can be replaced by a halogen atom to make a halogenoalkane.
- DehydrationDehydration is the removal of a water molecule from an alcohol to form an alkene.
- Oxidation Reactions of AlcoholsAlcohols can be oxidised by warming them with acidified potassium dichromate(VI), K2Cr2O7 in dilute sulfuric acid.
- Purification by Simple DistillationSimple distillation separates a volatile liquid from non-volatile substances, or from liquids whose boiling temperatures are very different.
- Fractional DistillationFractional distillation separates a mixture of miscible liquids whose boiling temperatures are close together.
- Solvent ExtractionSolvent extraction uses two immiscible liquids (liquids that do not mix) to separate substances.
- DryingAfter solvent extraction, the organic layer still contains small amounts of water.
- Test for PurityA pure substance has fixed physical properties.
- Exam Style Question - 1Question Propan-1-ol, CH3CH2CH2OH, can be oxidised to two different organic products.
- Exam Style Question - 2Question A student prepares 1-bromobutane by heating butan-1-ol with sodium bromide and concentrated sulfuric acid under reflux.
- Exam Style Question - 3Question Butan-2-ol, CH3CH(OH)CH2CH3, can be dehydrated to form alkenes.
- Exam Style Question - 4Question A student made 1-bromobutane from 7.40 g of butan-1-ol.
- Exam Style Question - 5Question X, Y and Z are three different alcohols, each with the molecular formula C4H10O.
- Exam Style Question - 6Question Ethanol is oxidised by acidified potassium dichromate(VI).
On the specification
- Topic 6E: Alcohols