26.3 carboxylic acids

Question 1

define carboxylic acid

Answer 1

organic acid which contains the carboxyl functional group

Question 2

why can carboxylic acids form hydrogen bonds with water molecules?

Answer 2

carboxylic acids are polar

Question 3

what happens to the carboxylic acid’s solubility when the carbon chain increases?

Answer 3

as the number of carbon atoms increases, the solubility decreases because the non-polar carbon chain has a greater effect on the overall polarity of the molecule

Question 4

what type of acids are carboxylic acids classified as?

Answer 4

weak acids as they partially dissociate when dissolved in water

Question 5

what do carboxylic acids react with in redox reactions?

Answer 5

metals

Question 6

what do carboxylic acids produce in redox and neutralisation reactions?

Answer 6

caboxylate salts

Question 7

what forms in a redox reaction of a carboxylic acid with metals?

Answer 7

hydrogen gas and carboxylate salt

Question 8

what is produced in a reaction with metals oxide?

Answer 8

salt and water

Question 9

what is formed in a reaction with an alkali?

Answer 9

salt and water

Question 10

what is formed in a reaction with a carbonate?

Answer 10

carbon dioxide gas, salt and water

Question 11

what is the test for a carboxyl group?

Answer 11

carboxylic acids are the only common organic compounds acidic enough to react with carbonates (phenols cannot react with carbonates)