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Agri enviro

alcohols L9

what is the functional group of alcohols OH
in a primary alcohol the OH is attached to one C which is attached to 1 other carbon
in a secondary alcohol the OH is attached to one C which is attached to 2 other carbons
in a tertiary alcohol the OH is attached to one C which is attached to 3 other carbons
an example of a carbon with 2OH functional groups is ethylene glycol (antifreeze). A diol
an alcohol with 3 OH functional groups is glycerol
a phenol has an OH group on a benzene ring
a thiol has an SH group . Mercaptans
disulphide bonds in the amino acid cysteine are responsible for curly hair
oxidising agents include oxygen, ozone, hydrogen peroxide,potassium permanganate and sodium dichromate
primary alcohols are first oxidised to aldehydes and then to carboxylic acids
secondary alcohols are oxidised to ketones
the OH functional group on glucose reacts with fehlings or benedicts solution to give a brick red precipitate
to test for alcohol react it with sodium dichromate it is oxidised to the aldehyde and the dichromate changes colour from orange to green
the silver mirror test is used to test for aldehydes
Created by: PDervin