Multiple Choice
Determine a possible triacylglycerol molecule formed when linoleic acid undergoes partial hydrogenation and consumes 1 mole of hydrogen gas.
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32. Lipids
Triacylglycerol Reactions: Hydrogenation
Multiple Choice
A triacylglycerol molecule in the form of linoleic acid consumes 2 moles of hydrogen gas. Which of the following fatty acid represents the product formed?
A
Myristic acid
B
Stearic acid
C
Palmitic acid
D
Oleic acid
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Verified step by step guidance1
Identify the structure of linoleic acid, which is a polyunsaturated fatty acid with two double bonds in its hydrocarbon chain.
Understand that the process of hydrogenation involves the addition of hydrogen (H₂) across the double bonds in the fatty acid chain, converting them into single bonds.
Since linoleic acid has two double bonds, consuming 2 moles of hydrogen gas will fully saturate these double bonds, converting them into single bonds.
Recognize that the complete hydrogenation of linoleic acid results in a saturated fatty acid with no double bonds.
Compare the structures of the given fatty acids: Myristic acid, Stearic acid, Palmitic acid, and Oleic acid. Identify that Stearic acid is the fully saturated fatty acid that corresponds to the hydrogenated product of linoleic acid.
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