Discussion
The saponification value of an oil is the mass of potassium hydroxide needed to saponify
Answer: A
Correct answer: one gram of the oil
The saponification value is expressed in milligrams of potassium hydroxide per gram of oil, so it is inherently a per-gram figure. It measures the ester content, since only esters are saponified, and it therefore distinguishes a vegetable or synthetic ester oil from a mineral one.
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