C3.6 Alcohols, Carboxylic Acids And Esters Flashcards
What the symbol for ethanol?
CH3CH2OH
Name the first 5 alcohols?
Methanol Ethanol Propanol Butanol Pentanol
What’s the functional group of alcohols?
OH
What happens when an alcohol dissolves in water?
Forms a neutral solution
What happens with an alcohol reacts with sodium?
Hydrogen made
Uses of alcohols?
Volatile
Fuel
Solvent
Drink
Ethanol + oxygen =?
Ethanoic acid
What happens when an alcohol burns in air?
Water and carbon dioxide made
What’s the functional group of carboxylic acids?
COOH
What happens when carboxylic acids dissolve in water?
Acidic solution made
Use of carboxylic acids?
Vinegar
Carboxylic acid and carbonate makes?
Carbon dioxide and water
Carboxylic acid and alcohol makes?
Esters
What catalyst is needed to react ethanol and ethanoic acid?
Sulphuric acid
Why are carboxylic acids weaker?
They only slightly disassociate so there’s a lower concentration of hydrogen ions in it so less cam react
How can you test for an ester?
Add sodium and it’s the only one which won’t react
How do you test for an alcohol?
Add acidified potassium dichromate amd it would go orange to green if it’s alcohol
What’s the functional group for an ester?
COO
In ethyl propanoate which is the alcohol and which is the acid?
First alcohol then acid
But opposite when drawn
Properties of esters?
Volatile
Smell
Easy to make
Can be from natural sources
Use of esters?
Perfumes
Ethics of alcohol?
Health problems
Crime
Cost
Ethics with ethanol and esters as biofuels?
Use land
So less food
Deforestation
