a. Which of the following fatty acids has the lowest melting point? Explain.
b. Which of the following fatty acids has the highest melting point? Explain.
$\mathrm{CH}_{3}-\left(\mathrm{CH}_{2}\right)_{16}-\mathrm{COOH}$
Stearic acid
$\mathrm{CH}_{3}-\left(\mathrm{CH}_{2}\right)_{4}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_{2}-\mathrm{CH}=\mathrm{CH}-\left(\mathrm{CH}_{2}\right)_{7}-\mathrm{COOH}$
Linoleic acid
$\mathrm{CH}_{3}-\left(\mathrm{CH}_{2}\right)_{7}-\mathrm{CH}=\mathrm{CH}-\left(\mathrm{CH}_{2}\right)_{7}-\mathrm{COOH}$
Oleic acid