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Questions and Answers
What method can be used to approximate the viscosity of the original vegetable oil and biodiesel in the lab?
What method can be used to approximate the viscosity of the original vegetable oil and biodiesel in the lab?
- Comparing the gel formation temperatures
- Measuring the density
- Calculating the theoretical yield
- Measuring the time it takes for a known amount of the liquid to flow out of a pipette (correct)
At what temperature does pure biodiesel typically gel?
At what temperature does pure biodiesel typically gel?
- -10°C
- 0°C (correct)
- 20°C
- 10°C
What is a good indication of the onset of gel formation in biodiesel?
What is a good indication of the onset of gel formation in biodiesel?
- Density measurement
- Cloudiness in the liquid (correct)
- Comparing colors under light
- Calculating percentage yield
What role does an ice-salt bath play in observing gel formation in biodiesel mixtures?
What role does an ice-salt bath play in observing gel formation in biodiesel mixtures?
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What is sodium hydroxide's role in the production of biodiesel from vegetable oil?
What is sodium hydroxide's role in the production of biodiesel from vegetable oil?
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