Fatty acids CH 3 ( CH 2 ) 16 COOH , CH 3 ( CH 2 ) 7 CH = CH ( CH 2 ) 7 COOH and CH 3 ( CH 2 ) 5 CH = CH ( CH 2 ) 7 COOH has to be arranged in increasing order of melting point. Concept Introduction: Fatty acid leads to formation of lipids and consists of a carboxyl group ( − COOH ) with long straight chain of carbon and hydrogen atoms. Long straight-chain can be saturated as well as unsaturated. Fatty acid consists of hydrophobic part and hydrophilic part. The nonpolar part of the chain consists of carbon and hydrogen atoms and is water repellant called hydrophobic part and the polar part that is attracted to water is called hydrophilic part. The hydrophobic part is larger than that of hydrophilic part.

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Chapter 15, Problem 15.37AP

Interpretation Introduction

Interpretation:

Fatty acids CH3(CH2)16COOH, CH3(CH2)7CH=CH(CH2)7COOH and CH3(CH2)5CH=CH(CH2)7COOH has to be arranged in increasing order of melting point.

Concept Introduction:

Fatty acid leads to formation of lipids and consists of a carboxyl group (−COOH) with long straight chain of carbon and hydrogen atoms. Long straight-chain can be saturated as well as unsaturated.

Fatty acid consists of hydrophobic part and hydrophilic part. The nonpolar part of the chain consists of carbon and hydrogen atoms and is water repellant called hydrophobic part and the polar part that is attracted to water is called hydrophilic part. The hydrophobic part is larger than that of hydrophilic part.

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