Question

Which property/properties is/are characteristic of the most abundant fatty acids found in plants and animals? I The trans isomer predominates. II. Trans fatty acids are the result of reversible catalytic hydrogenation. III. The unsaturated fatty acids have lower melting points than the corresponding saturated acids. IV. The greater the degree of unsaturation the lower is the melting point. OLI Ou OLIV Org

Answer 1

Lfalo # The characteristics of most abundant fatty acids .. Saturated fals are solid at room Temperature due To their molecular shape. They have a chain like astructure allows them to stack very well. unsaturated fat are not linear due to double bonded isp² hybridised Carbon, they not astack very well and liquid at room temperature. - &. - Butter - saturated fat (solid) - olive oil - unsaturated fat. (liquid) a unsaturated fatty acids may converted to Saturated failly- - acids by bigdoggenation Reaction (addition of Hydegge) o Er. H₂ C = CH₂ H2, C13 - CH3 Vegetable oil may convert by Hydrogenation Reaction , >> cng (CH2)7 CH= CH(CH3), cook - Hs > cn (CHCH, C4%C4%][rock The - (stearic acid -saturated Trans-fat : Trans fat are result of side reaction. with Catalyst of the hydrogenation process, the cis - I some of unsaturated fat convert to trans- Isomer (same molecular formula, bonded differently) e Energy of Hydrogenation process used for seaching activation Energy to convert cis form transform. Do insaturated fatty acid tends to liquid , there melting point Increase with increasing chain length but decreases of with degree of lansaturation Jelly acid in Human body are cis fatty acid Except Rentinoic to # All fatty acid in

T To unsaturated fat have low melting point as he double bond having cis configuration caused weak Intermolecular Interaction - oth increase in double bond The Interaction gets weak carida melting Intermolecular point decreases, noye. - Orecomeny,