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InterviewSolution
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What are fatty acids ? Compare saturated and unsaturated fatty acids. |
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Answer» Fatty acids : Fatty acids are organic acids with a long hydrocarbon chain ending in carboxyl group (-СООН). Characteristics of fatty acids are: (i) Has a long chain of carbon atoms. (ii) Is insoluble in water. (iii) Is soluble in organic solvents. (iv) Must leave an oily spot on a piece of paper. (i) Saturated fatty acids : They do not have any double bond in between carbon atoms of molecular chain. Examples are: Palmitic acid - CH3(CH2)14СООН Stearic acid – CH3(CH2)16СООН (ii) Unsaturated fatty acids: They have one or more double bonds in between carbon atoms of molecular chain. Unsaturated fatty acids have lower melting points as compared to saturated fatty acids. Examples are: Oleic acid – CH3 (CH2)7CH = CH(CH2)7 COOH Linoleic acid – CH3(CH2)4CH = (CHCH2)2 (CH2)6 COOH |
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