Topic 7 Flashcards
Functional group of an alcohol
Hydroxyl - OH
General formula for alcohols
CnH2n+1OH
Trend of melting and boiling points of alcohols and carboxylic acid as carbon atoms increase
As they number of atoms increases the melting and boiling point increases
Mp and bp of intermolecular forces of alcohols and carboxylic acids
The alcohols increase in size so the strength of intermolecular forces increase
Are alcohols soluable soluable
No, the smaller alcohols are soluable in water
What happens to solubility as carbon chain increase
The longer the carbon chain length the less soluble they are in water
Uses of alcohol
Fuel
Human consumption
Disinfectant wipes
Hand gels
Reasons why alcohols are used as fuels
Flammable
Burn with a clean flame
Suffix that all carboxylic acids end in
anoic acid
Solubility of carboxylic acids as c chain increases
Soluabilty decreases as the molecule size decrease
Uses of carboxylic acids
Food colouring
Making medicine
Making soap
Food preservation
What chemical is lime scale mainly composed
Calcium carbonate
Why can vinegar be used to remove lime scale
Reacts with insolvable calcium carbonate to give soluable calcium chloride —-} calcium dioxide + water
Acid in ginger solution
Ethanoic acid
Metal + acid
Salt + hydrogen
