Flashcards in C3.6 Acids and Alcohols Deck (11):
What are alcohols?
A homologous series or organic compounds containing the functional group ending -OH
What do you call a family of compounds that have similar properties and functions?
A homologous series
What is the basic arrangement for an alcohol?
CH3 CH2 OH = ethanol
As the alcohol molecule grows larger, more CH2s are added
H- C - C - O - H
How are alcohols named?
Meth = 1 Carbon
Eth = 2 Carbons
Prop =3 Carbons
But = 4 Carbons
Pent = 5 Carbons
+ Anol / ol
What are the properties of methanol, ethanol and propanol?
- Highly flammable
- Colourless liquids
- Dissolve in water to form a neutral solution
- Reactions with sodium produce HYDROGEN + SALT
- Burn / react with air to produce carbon dioxide + water
What are carboxylic acids?
A homologous series with the same functional group
How are carboxylic acids named?
+ anoic acid
eg METHanoic acid
How are carboxylic acids arranged?
HCOOH / CH3COOH / CH3CH2COOH
H - C - C
H O - H
The top O has a double bond
How can ethanoic acid be formed from ethanol?
Ethanoic acid can be formed due to mild oxidation
such as slight fermentation by the action of microbes in aerobic conditions
Addition of chemical oxidation agents such as acidified potassium dichromate
What are the properties of Carboxylic acids?
- Dissolve in water to produce ACIDIC solutions
- React with carbonates to produce CARBON DIOXIDE + SALT + WATER
- React with alcohols ( + catalyst ) to form esters
eg ethanol + ethanoic acid → ethyl ethanoate + water