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Chapter 31: Question 31.1 (page 1233)

One component of jojoba oil is a wax formed from eicosenoic acid [CH3CH27CH=CHCH29CO2H]andCH3(CH2)7CH=CH(CH2)8OH . Draw the structure of the wax, including the cis geometry of both carbon-carbon double bonds.

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01

Jojoba oil

Jojoba oil is an oil that is acquired from the jojoba shrub. It is a stable oil because of its chemical composition. It comprises of several properties, and one of its main being its anti-inflamatory property.

02

Waxes

Waxes come under the category of hydrolyzable lipids. They are esters (RCOOR') generated by combining alcohol (R'OH) comprising high molecular weight with a fatty acid (RCOOH). Their hydrophobic nature is due to the elongated hydrocarbon chain.

03

Structure of the wax, including the cis geometry of both carbon-carbon double bonds

Fatty acids combine with high molecular weight alcohol to create waxes. The structure of eicosenoic acid can be given as:

Structure of eicosenoic acid

The structure of the alcohol can be given as:

Structure of octadec-9-en-1-ol

The reaction of eicosenoic acid with high molecular weight alcohol generates wax. The structure of wax comprising the representation of cis double bonds can be given as:

The reaction of eicosenoic acid with alcohol to generate wax

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