Which compound has a functional group that contains two oxygen atoms?

NY Regents Chemistry Exam Jan 2023

Which compound has a functional group that contains two oxygen atoms? (1) 1-propanamine

(2) 2-chloropropane

(3) methyl propanoate

(4) methyl ethyl ether

Solution:

Table R on the Reference table lists all of the organic chemistry functional groups. Esters have COOR functional groups which has two oxygen atoms. Methyl propanoate is an example of a molecule that contains an ester functional group on Table R.