A 200 g sample of soybean oil contains 20 % triglycerides. When it is heated at 200 °C for 2 h, 15 % of the triglycerides hydrolyze to free fatty acids. How many grams of free fatty acids are formed?
Answer
6 g
The correct answer is 6 g — Thus, 6 g of free fatty acids are produced.
Step-by-step solution
- Calculate the mass of triglycerides: .
- Determine 15 % hydrolyzed: .
- Thus, 6 g of free fatty acids are produced.
Common mistake: Calculating 15 % of the whole sample instead of the triglyceride portion
Concept tested: Triglyceride hydrolysis to free fatty acids
Published · Last updated · How this solution was prepared and checked
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