Reactions of Alcohols

Frage	Antworten
Oxidise a PRIMARY alcohol: what does it form - functional group?	Aldehyde C=O
Oxidise a PRIMARY alcohol: what must you do to prevent further oxidation?	Distil immediately
Oxidise a PRIMARY alcohol: what colour change occurs to what part of the reaction mixture?	Acidified dichromate ions (potassium dichromate) Orange to Green
Oxidise a PRIMARY alcohol: what must be present as part of the conditions of the reaction but do not affect the products?	K2Cr2O7 + H2SO4
Oxidise a PRIMARY alcohol: What happens if you heat stronger under REFLUX with excess acidified dichromate?	Pass through aldehyde stage to carboxylic acid C=O l OH
Oxidise a SECONDARY alcohol: conditions?	K2Cr2O7 + H2SO4 + heat
Oxidise a SECONDARY alcohol: Product? Functional group?	Ketone C ll O in middle of molecule (where OH group was)
Can you oxidise a tertiary alcohol?	no
Conditions for ESTERIFICATION?	warm acid catalyst - usually conc. sulphuric
DEHYDRATION of an alcohol (primary or secondary): what are the possible catalysts? conditions?	Conc. H2SO4 / Conc. H3PO4 heat reflux
what do you form when you dehydrate an alcohol?	alkene + water
Conditions for Fermentation?	Yeast 37 degrees C
Fermentation Equation?	C6H12O6(aq) --> 2CH3CH2OH(aq) + 2CO2
Why do alcohols dissolve in water?	Hydrogen bonds form between the polar OH groups of the alcohol and water molecules

Zusammenfassung der Ressource

	Erstellt von Ellie Hield vor etwa 11 Jahre