Question

question 19 of 30
which functional group is represented in the diagram below?
diagram: o double - bonded to c, with two r groups attached to c
a. ether
b. ketone
c. ester
d. aldehyde

Explanation:

To determine the functional group, we analyze the structure:

• Ether has the formula \( R - O - R \), no carbonyl (\( C = O \)) group, so A is incorrect.
• Ketone has a carbonyl group (\( C = O \)) with two alkyl/aryl groups (\( R \)) attached to the carbonyl carbon (structure \( R - CO - R \)), which matches the given diagram.
• Ester has the formula \( R - COO - R' \), with an additional oxygen compared to the given structure, so C is incorrect.
• Aldehyde has a carbonyl group with one \( R \) group and one hydrogen (\( R - CO - H \)), not two \( R \) groups, so D is incorrect.

Answer:

B. Ketone