Animal and vegetable fats are___________________?
Correct answer: C. Triesters formed from glycerol and fatty acids
- A. Glycerols
- B. Fatty acids
- C. Triesters formed from glycerol and fatty acids
- D. Tetraesters formed from glycerol and fatty acids
Explanation
Animal and vegetable fats are triglycerides, meaning triesters formed when the three hydroxyl groups of glycerol react with fatty acids. They are not glycerol or free fatty acids, and “tetraesters” is impossible because glycerol has only three hydroxyl groups.
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About Classification of Organic Compounds
Organic compounds are classified by carbon skeleton into open-chain, branched-chain and cyclic compounds, including homocyclic and heterocyclic types. The classification also uses functional groups to distinguish hydrocarbons, halo compounds, alcohols, aldehydes, ketones, carboxylic acids and their derivatives, which is different from naming compounds by IUPAC rules.
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