How is the molecular weight of fatty acid determined?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Saponification value.
The saponification value is defined as the amount of potassium hydroxide (KOH) in mg required to saponify 1 gram of fat or oil. Since it reflects the average molecular weight (chain length) of all the fatty acids present, it is commonly used to determine the molecular weight of fatty acids — lower molecular weight fatty acids have higher saponification values, and vice versa.