Name the following 3 structural formulas correctly, in order from left to right

1. Methyl propanoate.

2. Propanol.

3. 2–pentyne

Explanation:

1. The functional group in this case is ester. We name ester by naming the group after the functional group (–COO) then followed by the parent compound with the name ending with –oate.

The group after the functional is methyl i.e —CH3.

The parent compound has 3 carbon i.e propane. The functional group replaces the –e in propane with –oate.

Therefore, the name of the compound is:

Methyl propanoate.

2. In this case the functional group is

–OH i.e alcohol.

The compound has 3 carbon i.e propane. The functional group replaces the –e in propane with –ol.

Therefore, the name of the compound is:

Propanol.

3. The triple bond represents the functional group in this case i.e alkyne. We'll give the triple bond the lowest low count by counting from the left. The triple bond is at carbon 2.

The compound has 5 carbon i.e pentyne since it contains triple.

The name of the compound is:

2–pentyne