Flashcards
Reactions of Alcohols
Cards in this deck (14)
- 1Oxidise a PRIMARY alcohol: what does it form - functional group?Aldehyde
C=O - 2Oxidise a PRIMARY alcohol: what must you do to prevent further oxidation?Distil immediately
- 3Oxidise a PRIMARY alcohol: what colour change occurs to what part of the reaction mixture?Acidified dichromate ions (potassium dichromate)
Orange to Green - 4Oxidise a PRIMARY alcohol: what must be present as part of the conditions of the reaction but do not affect the products?K2Cr2O7 + H2SO4
- 5Oxidise 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 - 6Oxidise a SECONDARY alcohol: conditions?K2Cr2O7 + H2SO4
+ heat - 7Oxidise a SECONDARY alcohol: Product? Functional group?Ketone
C
ll
O
in middle of molecule (where OH group was) - 8Can you oxidise a tertiary alcohol?no
- 9Conditions for ESTERIFICATION?warm
acid catalyst - usually conc. sulphuric - 10DEHYDRATION of an alcohol (primary or secondary): what are the possible catalysts? conditions?Conc. H2SO4 / Conc. H3PO4
heat
reflux - 11what do you form when you dehydrate an alcohol?alkene + water
- 12Conditions for Fermentation?Yeast
37 degrees C - 13Fermentation Equation?C6H12O6(aq) --> 2CH3CH2OH(aq) + 2CO2
- 14Why do alcohols dissolve in water?Hydrogen bonds form between the polar OH groups of the alcohol and water molecules
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- A-Levels Chemistry Flashcards on Reactions of Alcohols, created by Ellie Hield on 01/06/2013.
- Created by
- Ellie Hield · Jun 2013
- Updated
- Feb 19, 2016
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