Chemistry organic Unit 4 3.5 / 5 based on 3 ratings ? ChemistryA2/A-levelEdexcel Created by: Katie LenetteCreated on: 18-12-12 18:36 Which statement is false about optical isomerism ? A racemic mixture is always produced 1 of 8 What is the general formula for an aldehyde ? C(n) H(2n+1)CHO 2 of 8 What is the difference between a Ketone and Aldehyde ? A ketones carbonyl group can be positioned throughout the chain ,whereas an Aldehyde carbonyl group is at the end. 3 of 8 How can an Aldehyde be prepared from an alcohol ? Oxidation of a primary alcohol and immediately distill 4 of 8 How can a Ketone be prepared from an alcohol Oxidation of a secondary alcohol 5 of 8 What test doesn't distinguish between a Ketone or aldehyde Brady's reagent - yellow / orange precipitate 6 of 8 What is the observations of the Iodoform reaction ? Pale yellow precipitate 7 of 8 What reagent is needed to reduce an aldehyde or Ketone to an alcohol ? LiAlH4 in dry ether 8 of 8
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