carboxyllic acids

Question 1

what are carboxylic acids functional group

Answer 1

COOH

Question 2

carboxylic acids properties

Answer 2

• dissolve in water to form acidic solutions with pH values less than 7
• react with metals to form a salt and hydrogen
• react with bases to form a salt and water
• react with carbonates to form a salt, water and carbon dioxide, the salts formed in these will end in “anoate” suffix

Question 3

are carboxylic acids weak or strong, explain

Answer 3

Carboxylic acids are weak acids. This means that their solutions do not contain many hydrogen ions compared with a solution of a strong acid with the same concentration. The pH of a weak acid will be higher than the pH of a strong acid, if their concentrations are the same.

In a solution of a strong acid, the molecules are fully ionised, but in a weak acid, very few of the molecules are ionised.

Question 4

how are esters made

Answer 4

by mixing carboxylic acids with alcohol

Question 5

esters equation

Answer 5

carboxylic acid + alcohol –> ester + water

Question 6

example of an ester equation

Answer 6

ethanol + ethanoic acid → ethyl ethanoate + water