CHM 1321 : Orgo Chem Lab 3.docx

• School: University of Ottawa
• Department: Chemistry
• Course: CHM 1321
• Professor: All

Document Summary

Extraction: this method uses a different technique in which the two chemical compounds being separated are in immiscible solvents, also known as phases. By using a separatory funnel, one phase is separated from the other leaving the impurities behind. The following lab will explore the pivotal role oxidation and reduction reactions play in chemical transformation. In an organic oxidation, the compound typically loses hydrogen atoms. Borohydride (nabh4), will be used to reduce 3-nitroacetophenone and with the actual, theoretical and percent yield of the following reaction will be calculated. *in the presence of the carbonyl group the sodium borohydride delivers h- to its target functional group. Stirring the mixture is necessary to ensure that most of the starting material has dissolved: 80mg of sodium borohydride is added to the reaction flask in 3 equal portions, waiting approximately 2 minutes between additions. Once the addition is complete, stirring continues for 15 minutes.