The functional group present in an ester is
Correct answer: A. COOR, formed by replacing the acidic hydrogen of a carboxylic acid
- A. COOR, formed by replacing the acidic hydrogen of a carboxylic acid
- B. OH attached to a benzene ring
- C. NH2 attached to a carbon chain
- D. a carbon to carbon triple bond
Explanation
An ester is formed when a carboxylic acid reacts with an alcohol, water being eliminated, and the resulting group is responsible for the pleasant fruity smells used in flavourings and perfumes. A hydroxyl on a benzene ring makes a phenol and an NH2 group makes an amine. Esterification is reversible and is catalysed by concentrated sulphuric acid.
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About Functional Groups
Functional groups are specific atoms or atom groups that determine the characteristic reactions and properties of organic compounds. Coverage includes alkenes, alkynes, halo, hydroxyl, ether, carbonyl, carboxyl, ester, amino and nitro groups, together with their structures, nomenclature and related homologous series.
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