Carboxylic acids

What is the characteristic functional group of carboxylic acids?

• Carbonyl

• Hydroxyl

• Carbon

• Carboxyl

name this diagram:

• ethanol

• ethanoic acid

• methyl methanoate

• Formic acid

Which is the correct order of boiling points of carboxylic acids, from the lowest to the highest?

• methanoic acid, ethanoic acid, butanoic acid, propanoic acid

• methanoic acid, propanic acid, butanoic acid, ethanoic acid

• methanoic acid, ethanoic acid, propanoic acid, butanoic acid

• ethanoic acid, methanoic acid, propanoic acid, butanoic acid

General formula of carboxylic acids is:

• C_nH_2n+1OH

• C_nH_2nCOOH

• C_nH_2n+1COOH

• C_nH_2n+2COOH

Carboxylic acids are:

• strong acids which ionise fully in aqueous solution

• strong acids which ionise partially aqueous solution

• weak acids which ionise fully in aqueous solution

• weak acids which ionise partially in aqueous solution

Carboxylic acids react with reactive metals to give:

• salt and oxygen gas

• salt, carbon dioxide and water

• salt and hydrogen gas

• carbon dioxide and water

Acetic acid is found mainly in:

• detergents

• lemons

• vinegar

• butter

Methanoic acid reacts with magnesium carbonate to give:

• magnesium methanate, carbon dioxide and water

• magnesium methanoate, carbon dioxide and water

• magnesium, carbon dioxide and water

• carbon dioxide and water

Propanoic acid reacts with potassium hydroxide to give:

• potassium propanoate and water only

• potassium propanate and water only

• potassium propanoate and hydrogen gas only

• potassium propanate and hydrogen gas only