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Explain why the free fatty acids derived from some soaps solidify, while others remain liquid. Give...

Explain why the free fatty acids derived from some soaps solidify, while others remain liquid. Give examples

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Answer #1

Undaturated fatty acids(containing double and triple bonds between C-atoms) are unable to pack properly due to kinks in them and due to cis/trans - structure. Hence they remain as liquid at room temperature. e.g Oleic acid ( a cis-unsaturated fatty acid), Linoleic Acid etc

However saturated fatty acids( do not contain any double or triple bond) are well packed due to absence of cis/trans - structure. Hence they remain solid at room temperature. e.g palmitic acid, lauric acid etc.

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