oxidation and reduction - revision Flashcards
alcohol naming quiz https://legacy.chemgym.net/as_a2/topics/naming_and_classifying_alcohols/quiz_2.html
what is the structure of the primary, secondary and tertiarty alcohol
draw
what is an aldehyde
- A carbon atom sharing a double bound with an oxygen atom
- A single bond with a hydrogen atom
- A single bond with anther
what oxidates primary alcohol ?
Cr2O72- (Dichromate) and H+
what are the products of primary alcohol oxidation ?
- Aldehyde
- Carboxylic Acid
what are the products of secondary alcohol oxidation ?
ketone
what are the products of tertiary alcohol oxidation ?
no reaction
what’s used to reduce primary alcohol ?
LiAIH4 in dry ether which is a source of H- (hydride)
what’s used to reduce secondary alcohol ?
LiAlH4
what are the tests used to distinguish aldehydes from ketone ?
- Fehling’s solution
- Tollen’s reagent
what”s the result of a Fehling’s solution if a aldehyde is present ?
- Blue copper ion reduced to brick red precipitate
what’s the result of a Fehling’s solution test on a ketone ?
No reaction
What’s the result of a Tollen’s reagent on an aldehyde ?
From a colourless solution to a silver mirror colour
what’s the result of a Tollen’s reagent test on a ketone ?
No reaction
what is used to oxidise secondary alcohol ?
Chromatic acid (H2CrO4)
what is a ketone ?
carbonyl group is attached to a carbon atom within the carbon chain
