Pre-Lab Assignment I: Werk-up of Reaction: Extractions and Drying L Pre-Lab Ques

Question

Pre-Lab Assignment I: Werk-up of Reaction: Extractions and Drying L Pre-Lab Questions 1. Winite the chemical equation for the reaction betiveen unreacted carboxylic acid and sodium carbonate 2 RCOOH-NaCo, 2 RCOON a (aq)-H,0-CO, (g) 2. What is the gas that bubbles out of the solution when mixing of the tvo layers starts? The gas bubbles come from the carbon dioxide produced in the reaction. 3. la wtiuch layer will be the product of this reaction-aqueous or org 4. Organic solutions can be lighter or denser than aqueous solutions. Therefore, the aqueous larjer could be the top or bottom layer of the base extraction. How would you easily dentifty thue two lagers so that you do not throw away your product? 5. W'hat is the function of the drsing agent treatment of the organic solution? DOLL 6 0 5 6

Explanation / Answer

3. Being an organic compound the product of the reaction willbe in organic layer.

4. Organic solvent (except halogenated solvent) is lighter than aqueous solvent therefore the aqueous layer could be the bottom layer of base extraction. To identify the layer you should know the densities of organic and aqueous solvent. The more denser solvent will be heavier and will form the bottom layer while the less denser will form the top layer of base extraction.

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