RESULTS Table 1. Experimental data of biodiesel Compounds Volume (ml) Mass (g) Density (g/cm³) Vegetable oil 130 Bio fuel 17.5 Disregarded 28.15 0.9 1.61 Glycerol Disregarded 28.15 1.26 PROCEDURE 1. In a 100 ml Erlenmeyer flask equipped with a clamp, stir 40 ml of MeOH and 1.3 g of solid NaOH at room temperature to make a solution. 2. In another 250 ml round bottom flask, add 130 ml of vegetable oil and heat the flask with the oil to 50 °C using a water bath with magnetic stirring. 3. Add methoxide solution to the oil and stir the mixture for 1 hour, maintaining the indicated temperature. 4. Transfer the flask contents to a separatory funnel and allow the mixture to stand until the two layers separate. The top layer corresponds to biodiesel and the bottom layer is the glycerol. 5. Use the separatory funnel stopcock to separate the two layers. If the glycerol does not pour freely, the biodiesel can be removed from the top of the separatory funnel using a pipette. 5. Measure the resulting volume with a graduated cylinder and weigh the same cylinder to determine the density.

RESULTS Table 1. Experimental data of biodiesel Compounds Volume (ml) Mass (g) Density (g/cm³) Vegetable oil 130 Bio fuel 17.5 Disregarded 28.15 0.9 1.61 Glycerol Disregarded 28.15 1.26 PROCEDURE 1. In a 100 ml Erlenmeyer flask equipped with a clamp, stir 40 ml of MeOH and 1.3 g of solid NaOH at room temperature to make a solution. 2. In another 250 ml round bottom flask, add 130 ml of vegetable oil and heat the flask with the oil to 50 °C using a water bath with magnetic stirring. 3. Add methoxide solution to the oil and stir the mixture for 1 hour, maintaining the indicated temperature. 4. Transfer the flask contents to a separatory funnel and allow the mixture to stand until the two layers separate. The top layer corresponds to biodiesel and the bottom layer is the glycerol. 5. Use the separatory funnel stopcock to separate the two layers. If the glycerol does not pour freely, the biodiesel can be removed from the top of the separatory funnel using a pipette. 5. Measure the resulting volume with a graduated cylinder and weigh the same cylinder to determine the density.

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter5: Distillation

Section: Chapter Questions

Problem 9Q

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