Which of the following correctly matches the molecules to the names of the functional group?

• A. ${\mathrm{CH}}_3\mathrm{OH}$: Ether, ${\mathrm{CH}}_3\mathrm{COOH}$: Ketone, ${\mathrm{CH}}_3\mathrm{NH}{2}_{}$: Alkene
• B. ${\mathrm{CH}}_3\mathrm{OH}$: Carboxylic acid, ${\mathrm{CH}}_3\mathrm{COOH}$: Amide, ${\mathrm{CH}}_3\mathrm{NH}{2}_{}$: Ether
• C. ${\mathrm{CH}}_3\mathrm{OH}$: Alcohol, ${\mathrm{CH}}_3\mathrm{COOH}$: Carboxylic acid, ${\mathrm{CH}}_3\mathrm{NH}{2}_{}$: Amine
• D. ${\mathrm{CH}}_3\mathrm{OH}$: Aldehyde, ${\mathrm{CH}}_3\mathrm{COOH}$: Alcohol, ${\mathrm{CH}}_3\mathrm{NH}{2}_{}$: Nitrile

Answer: (C)

Verified step by step guidance

1. Identify the functional groups present in each molecule by examining their structural formulas: for example, CH\_3OH has an -OH group attached to a carbon, CH\_3COOH contains a -COOH group, and CH\_3NH\_2 has an -NH\_2 group.
2. Recall the common names of these functional groups: an -OH group attached to an alkyl chain is called an alcohol, a -COOH group is a carboxylic acid, and an -NH\_2 group is an amine.
3. Compare each molecule's functional group to the options given, matching the correct functional group name to the molecule based on the groups identified.
4. Eliminate incorrect matches by understanding the definitions of other functional groups mentioned, such as ethers (R-O-R'), ketones (R-CO-R'), alkenes (C=C double bonds), amides (R-CONH\_2), aldehydes (R-CHO), and nitriles (R-C≡N).
5. Confirm the correct answer by ensuring that CH\_3OH is labeled as alcohol, CH\_3COOH as carboxylic acid, and CH\_3NH\_2 as amine, which aligns with the standard nomenclature of organic functional groups.