Question

identify the saturated fatty acid.
select the correct answer below:
hooc - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂
hooc - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch = ch - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ -
hooc - ch₂ - ch₂ - ch₂ - ch₂ - ch = ch - ch₂ - ch = ch - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₂ - ch₃
all of the above
none of the above.

Explanation:

A saturated fatty acid has no double bonds in its carbon - chain. The first option has only single bonds between carbon atoms. The second option has a \( \text{CH}=\text{CH} \) double bond. The third option has two \( \text{CH}=\text{CH} \) double bonds. Since only the first option has no double bonds, it is the saturated fatty acid.

Answer:

First option ( \( \text{HOOC}-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CH}_2 \) )