695124 ! || a polyunsatu rated latty aid contains more than one Chem 101,01: Sur

Question

695124 ! || a polyunsatu rated latty aid contains more than one Chem 101,01: Survey of Chemistry FA15 - Section 1 wK 13 Question 27 causes fatty acids to be insoluble in water Fatty acids can be saturated (contain only single bonds between carbon atoms) or unsaturated (contain at least one carbon-carton double bond). Unsaturaled falty acids ca In general, the melting point of a saturated fatty acid increases with the length of the carbon chain. Unsaturated fatty ackds typically have a lower meting point than saturate fatty ackdis have a lower meiting point than monounsaturated fatty acids Part A Rank the following fatty acikds according to the ir melting point, from highest melting point to lowest melting point Lauric acid t linoleic acid oH linolenic acid t myristic acid t oleic acid on stearic acid Rank from highest melting point to lowest melting point. To rank tems as equivalent, overtap them

Explanation / Answer

Ans- Part-A unsaturated fatty acids have lower melting points than the saturated fatty acids.

Stearic acid(+700C) > Myristic acid (+54.40C) > Lauric acid(+440C) > Oleic acid(+160C) > Linoleic acid(-50C) > Linolenic acid(-110C)

Part-B

highest melting point= stearic acid(+700C)

lowest melting point = linolenic acid(-110C)

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