3.3.8 - Aldehydes and Ketones

Question 1

Aldehydes are produced from…

Answer 1

Initial oxidation and distillation of 1º alcohols

Question 2

Aldehydes will…

Answer 2

Oxidise further, in the presence of additional potassium dichromate to produce carboxylic acids

Question 3

Aldehyde’s provide a positive test for…

Answer 3

Tollen’s reagent and Fehling’s solution

Question 4

Ketones are produced from…

Answer 4

Oxidation of 2º alcohols with acidified potassium dichromate

Question 5

Oxidation reactions of aldehydes and ketones can be reversed via…

Answer 5

Reduction reactions

Question 6

Reduction reactions require…

Answer 6

A reducing agent of NaBH4 and aqueous conditions

Question 7

Reduction reactions are an example of…

Answer 7

Nucleophilic addition

Question 8

Nucleophilic addition reactions can also take place with…

Answer 8

:CN- nucleophile.

Question 9

Product of nucleophilic addition with :CN-

Answer 9

hydroxy-nitrile

Question 10

KCN is used in replacement of HCN because…

Answer 10

HCN is hard to store as a gas and reacts to produce dangerous byproducts

Question 11

Hydroxy-nitriles commonly contain…

Answer 11

a chiral carbon centre - optical isomers exist