Question

name the functional group shown in each molecule below. the first answer has been filled in for you.

Explanation:

1. For $CH_3 - C - O - CH_3$, it has the general formula $R - COO - R'$, which is the structure of an ester.
2. For $H - C\equiv C - CH_3$, the presence of a carbon - carbon triple bond makes it an alkyne.
3. For $CH_3 - CH_2 - CH_2 - CHO$, the $-CHO$ group is an aldehyde functional group.

Answer:

1. Ester
2. Alkyne
3. Aldehyde