The prostaglandin precursor arachidonic acid has the molecular formula C₂₀H₃₂O₂. Given that arachidonic acid is an acyclic carboxylic acid that contains no carbon-carbon triple bonds, how many carbon-carbon double bonds are present?

A) 2
B) 3
C) 4
D) 5
E) 6

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Victoria Molina · Accepted Answer

Final Answer : C, Explanation :  To determine the number of carbon-carbon double bonds, we need to look for the unsaturated parts of the molecule, which are designated by the U symbol in the molecular formula. Arachidonic acid has four unsaturated parts: 1U1B12, 0 O 2, 1U1B0, and 0 . Each U represents a carbon-carbon double bond. Therefore, there are a total of four carbon-carbon double bonds in arachidonic acid.

The prostaglandin precursor arachidonic acid has the molecular formula C₂₀H₃₂O₂. Given that arachidonic acid is an acyclic carboxylic acid that contains no carbon-carbon triple bonds, how many carbon-carbon double bonds are present?

A) 2
B) 3
C) 4
D) 5
E) 6

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The prostaglandin precursor arachidonic acid has the molecular formula C20H32O2. Given that arachidonic acid is an acyclic carboxylic acid that contains no carbon-carbon triple bonds, how many carbon-carbon double bonds are present?A) 2B) 3C) 4D) 5E) 6

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The prostaglandin precursor arachidonic acid has the molecular formula C₂₀H₃₂O₂. Given that arachidonic acid is an acyclic carboxylic acid that contains no carbon-carbon triple bonds, how many carbon-carbon double bonds are present?

A) 2
B) 3
C) 4
D) 5
E) 6