State the meaning of functional group in a carbon compound. Write the functional group present in $(i)$ ethanol and $(ii)$ ethanoic acid and also draw their structures.
(N/A) An atom or a group of atoms that determines the chemical properties of organic compounds is called a functional group. They confer specific properties to the compound,regardless of the length and nature of the carbon chain.
| Organic compound | Functional group and Structure |
|---|---|
| $(i)$ Ethanol | Alcohol group $(-OH)$: $CH_{3}-CH_{2}-OH$ |
| $(ii)$ Ethanoic acid | Carboxylic acid group $(-COOH)$: $CH_{3}-C(=O)OH$ |
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