Match these items.

1. ethanol and benzoic acid

butanyl butyrate

2. benzyl alcohol and acetic acid

isopropyl formate

ethyl benzoate

3. butyric acid and butanol

4. n-pentanol and propanoic acid

5. isopropyl alcohol and formic acid

benzyl acetate

pentanyl propanoate

Here's what I get

Explanation:

There are two methods of naming esters.

(a) Common names

alkyl alcohol + carboxylic acid ⟶ alkyl carboxylate

To form the name of an ester, you drop the alcohol and - ic acid ending from the names of the reactants.

The name of the ester consists of two words: the name of the alcohol followed by the acid name with the ending - ate.

(b) IUPAC (systematic) names

alkanol + alkanoic acid ⟶ alkyl alkanoate

To form the name of an ester, you drop the - anol and - ic acid endings from the names of the reactants.

The name of the ester consists of two words with the corresponding endings - yl and - ate.

You don't mix the common and IUPAC systems in the same name.

1. ethanol + benzoic acid ⟶ ethyl benzoate

2. benzyl alcohol + acetic acid ⟶ benzyl acetate

3. butanol + butanoic acid ⟶ butyl butanoate (IUPAC)

butyl alcohol + butyric acid ⟶ butyl butyrate (common)

4. pentanol + propanoic acid ⟶ pentyl propanoate (IUPAC)

n-pentyl alcohol + propionic acid ⟶ n-pentyl propionate (common)

5. isopropyl alcohol + formic acid ⟶ isopropyl formate