Unit 2 - Alcohols Flashcards
what is the functional group found in alcohols
-OH hydroxyl group
alcohols containing 2 hydroxyl groups are called
diols
alcohols containing 3 hydroxyl groups are called
triols
what can spoil food
moisture and oxygen
why does oxygen spoil food
oxygen is a reactive gas and therefore exposure to oxygen can cause oxidation reactions in the food.
what is the pH of an alcohol
7
how do we know if an alcohol has been oxidised
the pH will change
when applied to carbon compounds what affect do oxidation reactions have on the oxygen to hydrogen ratio
the ratio increases
what does ethanol oxidise to
ethanal
explain what has happened to the stucture of the alcohol as it has been oxidised
two hydrogen atoms have been removed to create a double bond with the oxygen.
example of a good oxidising agent
acidified potassium dichromate
in order to be oxidised alcohols must have at least one …
H atom on the C atom which is attached to the OH group
in primary alcohols the hydroxyl group is placed where in the chain?
the end of the carbon chain
in a secondary alcohol how many carbons are attached to the OH group
two
in a tertiary alcohol how many carbons are attached to the OH group
three
