BRAINCAKEAldehydes and Ketones
Aldehydes and ketones are carbonyl compounds: they contain the carbonyl group, C=O.
• In an aldehyde, the carbonyl carbon is bonded to at least one hydrogen atom, so the C=O is at the end of a carbon chain. The general formula is RCHO, where R is an alkyl group or H. Examples: methanal, HCHO, and ethanal, CH3CHO.
• In a ketone, the carbonyl carbon is bonded to two carbon atoms, so the C=O is within the chain. The general formula is RCOR', where R and R' are alkyl or aryl groups. The simplest ketone is propanone, CH3COCH3.
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More in Carbonyl Compounds
- Naming Carbonyl Compounds
- Physical Properties of Carbonyls
- Oxidation of Aldehydes
- Tollens' Reagent
- Fehling's and Benedict's Solutions
- Iodoform Reaction
- 2,4-DNPH Test
- Reduction with LiAlH4
All 11 lessons in Carbonyl Compounds · All Edexcel A-level Chemistry topics