C3.6 Flashcards
What are alcohols used for?
~ Alcoholic drinks
~ Solvents (substances that can dissolve chemicals)
~ Fuels
What is the functional group of alcohols?
-OH
Why does wine taste like vinegar when it’s off?
Because ethanol can be oxidised by chemicals or microbes to form ethanoic acid (the main acid in vinegar)
What do alcohols dissolve in water to form?
A neutral solution
What do alcohols produce when they react with sodium?
Hydrogen
What do alcohols burn in air to produce?
Carbon dioxide + water
What do organic compounds mostly contain?
Carbon
Where are organic compounds found?
In all living things
What are 3 examples of organic compounds?
Alcohols, carboxylic acids, esters
What is the functional group of carboxylic acids?
-COOH
What do carboxylic acids dissolve in water to produce?
Acidic solutions
What do carboxylic acids produce when they react with carbonates?
Carbon dioxide
What do carboxylic acids form when they react with alcohols?
Esters
Why don’t carboxylic acids dissolve completely in water?
They’re weak acids
Why does ethanoic acid have a higher pH than hydrochloric acid?
Because only some of the ethanoic acid ionises, as ionisation in solution is a reversible reaction, so there’s a lower concentration of H+ ions in solution