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From Table 1.1 indicates, among other things, the melting points of various fatty acids. Analyze the trend that the melting points of saturated fatty acids follow, from n-dodecanoic (CH3-(CH2) 10-COOH) to n-tetracosanoic (CH3-(CH2)22-COOH), and answer both next questions. Briefly justify your answers. i) What value would you expect the melting point of triacontanoic acid (CH3-(CH2) 28-COOH) to have? Choose one of the following options: a) More than 200 ° C b) About 94 ° C c) Less than 86 ° C d) Exactly 86.1 ° C ii) What value would you expect the melting

From Table 1.1 indicates, among other things, the melting points of various fatty acids. Analyze the trend that the melting points of saturated fatty acids follow, from n-dodecanoic (CH3-(CH2) 10-COOH) to n-tetracosanoic (CH3-(CH2)22-COOH), and answer both next questions. Briefly justify your answers. i) What value would you expect the melting point of triacontanoic acid (CH3-(CH2) 28-COOH) to have? Choose one of the following options: a) More than 200 ° C b) About 94 ° C c) Less than 86 ° C d) Exactly 86.1 ° C ii) What value would you expect the melting

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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From Table 1.1 indicates, among other things, the melting points of various fatty acids. Analyze the trend that the melting points of saturated fatty acids follow, from n-dodecanoic (CH3-(CH2) 10-COOH) to n-tetracosanoic (CH3-(CH2)22-COOH), and answer both next questions. Briefly justify your answers.


i) What value would you expect the melting point of triacontanoic acid (CH3-(CH2) 28-COOH) to have? Choose one of the following options:
a) More than 200 ° C
b) About 94 ° C
c) Less than 86 ° C
d) Exactly 86.1 ° C


ii) What value would you expect the melting point of octanoic acid (CH3-(CH2) 6-COOH) to have? Choose one of the following options:
a) 43.5 ° C
b) -20 ° C
c) About 20 ° C

table Some Naturally Occurring Fatty Acids Solubility at 30 °C (mg/g solvent) Carbon skeleton Structure Systematic name Common name (derivation) Melting point ("C) Water Benzene 12:0 CH,(CH,.C0OH n Dodecanoic acid 44.2 0.063 2,600 Lauric acid (Latin laurus, "laurel plant") Myristic acid (Latin Myristica, nutmeg genus) Palmitic acid (Latin palma, "palm tree") 14:0 CH,(CH,),COOH n-Tetradecanoic acid 53.9 0.024 874 16:0 CH,(CH,.COOH n-Hexadecanoic acid 63.1 0.0083 348 18:0 CH;(CHJsCOOH n-Octadecanoic acid Stearic acid (Greek stear, "hard fat") 69.6 0.0034 124 20:0 CH,(CHJuCOOH n-Eicosanoic acid Arachidic acid (Latin Arachis, legume genus) 76.5 24:0 CH,(CH)COOH n-Tetracosanoic acid 86.0 Lignoceric acid (Latin lignum, "wood" + cera, "wax") 16:1(A) CH,(CHJ;CH=CH(CH,COOH cis-9-Hexadecenoic acid CH,(CH,),CH=CH(CH,)»COOH cis-9-Octadecenoic acid Palmitoleic acid --0,5 18:1(4) Oleic acid (Latin oleum, "oil") 13.4 CH,(CHJ.CH CHCH CH= CHICH,,COOH 18:3(4121) CH,CH,CH-CHCH,CH- CHCH,CH=CH(CH,),COOH 20:4(A. CH,(CHJ,CH-CHCH,CH- CHCH CH-CHCH,CH- CH(CH,),COOH 18:2(A19) cis-,cis-9,12-Octadecadienoic Linoleic acid acid -5 (Greek linon, "flax") cis ,cis,cis-9,12,15- Octadecatrienoic acid a-Linolenic acid -11 cis,cis,cis-.cis-5,8,11,14- Icosatetraenoic acid Arachidonic acid -49.5
Transcribed Image Text:table Some Naturally Occurring Fatty Acids Solubility at 30 °C (mg/g solvent) Carbon skeleton Structure Systematic name Common name (derivation) Melting point ("C) Water Benzene 12:0 CH,(CH,.C0OH n Dodecanoic acid 44.2 0.063 2,600 Lauric acid (Latin laurus, "laurel plant") Myristic acid (Latin Myristica, nutmeg genus) Palmitic acid (Latin palma, "palm tree") 14:0 CH,(CH,),COOH n-Tetradecanoic acid 53.9 0.024 874 16:0 CH,(CH,.COOH n-Hexadecanoic acid 63.1 0.0083 348 18:0 CH;(CHJsCOOH n-Octadecanoic acid Stearic acid (Greek stear, "hard fat") 69.6 0.0034 124 20:0 CH,(CHJuCOOH n-Eicosanoic acid Arachidic acid (Latin Arachis, legume genus) 76.5 24:0 CH,(CH)COOH n-Tetracosanoic acid 86.0 Lignoceric acid (Latin lignum, "wood" + cera, "wax") 16:1(A) CH,(CHJ;CH=CH(CH,COOH cis-9-Hexadecenoic acid CH,(CH,),CH=CH(CH,)»COOH cis-9-Octadecenoic acid Palmitoleic acid --0,5 18:1(4) Oleic acid (Latin oleum, "oil") 13.4 CH,(CHJ.CH CHCH CH= CHICH,,COOH 18:3(4121) CH,CH,CH-CHCH,CH- CHCH,CH=CH(CH,),COOH 20:4(A. CH,(CHJ,CH-CHCH,CH- CHCH CH-CHCH,CH- CH(CH,),COOH 18:2(A19) cis-,cis-9,12-Octadecadienoic Linoleic acid acid -5 (Greek linon, "flax") cis ,cis,cis-9,12,15- Octadecatrienoic acid a-Linolenic acid -11 cis,cis,cis-.cis-5,8,11,14- Icosatetraenoic acid Arachidonic acid -49.5
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