according to the following procedure?
- What Would The Theoretical Yield For Cyclohexyl Acetate Be According To The Following Procedure 1 (283.3 KiB) Viewed 110 times
What would the theoretical yield for cyclohexyl acetate be according to the following procedure?
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What would the theoretical yield for cyclohexyl acetate be according to the following procedure?
What would the theoretical yield for cyclohexyl acetate be
according to the following procedure?
Set up a reflux apparatus using a 250 mL round-bottom flask with a ground glass neck and a heating mantle and controller. (See Figure A-3 in Appendix A for assembly of refluxing glassware). To the flask add 15.0 mL of cyclohexanol and 25 mL of glacial acetic acid. Carefully add 4 mL of concentrated sulphuric acid to the mixture. Swirl the flask gently to thoroughly mix the reactants, add 4 boiling chips and assemble the apparatus. Start the water flowing through the condenser and apply enough heat to get the mixture to boil such that the reflux vapors do not exceed 50% of the condenser. Excessive heat will cause a loss of vapors and therefore, product from the top of the condenser. Allow the reaction mixture to reflux for one hour from when it begins to boil. Meanwhile, set up a retort stand and a ring clamp to hold the separatory funnel during the extraction phase. Cool the solution in the reaction flask by immersing it in a cold water bath, then transfer it into a 250 mL separatory funnel. Rinse the reaction flask with 10 mL of cold water and transfer the rinses to the separatory funnel. Measure another 55 mL of cold water and add to the funnel as well. Stopper the funnel and invert gently a few times and allow the phases to delayer. Do not shake vigorously as this may result in an emulsion forming which will be difficult to delayer. Drain off the lower aqueous layer and discard to waste. The crude ester in the organic layer still contains some acetic acid which can be removed by extraction with 5% aqueous sodium bicarbonate. Carefully add 25 mL of 5% base to the separatory funnel. Swirl the funnel gently to allow some of the carbon dioxide gas to evolve. Stopper and invert the funnel gently, allow to delayer, with the stopper removed. When the two phases have separated, draw off the lower layer to waste. Repeat the extraction with another 25 mL portion of 5% base. This time, as the lower layer is drawn off, check it with a red litmus paper for basicity. If the aqueous layer is not yet basic, continue to extract the organic layer with 25 mL portions of 5% base. A total of 3 extractions are necessary. Once the acetic acid has been removed, add a final 25 mL portion of distilled water plus a 5 mL portion of saturated sodium chloride. Gently swirl the funnel contents but do not shake, to prevent an emulsion from farmina Carafudhu drnin of the lower DALAM Inuor to wnet. Moudrain the remainin arannin
according to the following procedure?
Set up a reflux apparatus using a 250 mL round-bottom flask with a ground glass neck and a heating mantle and controller. (See Figure A-3 in Appendix A for assembly of refluxing glassware). To the flask add 15.0 mL of cyclohexanol and 25 mL of glacial acetic acid. Carefully add 4 mL of concentrated sulphuric acid to the mixture. Swirl the flask gently to thoroughly mix the reactants, add 4 boiling chips and assemble the apparatus. Start the water flowing through the condenser and apply enough heat to get the mixture to boil such that the reflux vapors do not exceed 50% of the condenser. Excessive heat will cause a loss of vapors and therefore, product from the top of the condenser. Allow the reaction mixture to reflux for one hour from when it begins to boil. Meanwhile, set up a retort stand and a ring clamp to hold the separatory funnel during the extraction phase. Cool the solution in the reaction flask by immersing it in a cold water bath, then transfer it into a 250 mL separatory funnel. Rinse the reaction flask with 10 mL of cold water and transfer the rinses to the separatory funnel. Measure another 55 mL of cold water and add to the funnel as well. Stopper the funnel and invert gently a few times and allow the phases to delayer. Do not shake vigorously as this may result in an emulsion forming which will be difficult to delayer. Drain off the lower aqueous layer and discard to waste. The crude ester in the organic layer still contains some acetic acid which can be removed by extraction with 5% aqueous sodium bicarbonate. Carefully add 25 mL of 5% base to the separatory funnel. Swirl the funnel gently to allow some of the carbon dioxide gas to evolve. Stopper and invert the funnel gently, allow to delayer, with the stopper removed. When the two phases have separated, draw off the lower layer to waste. Repeat the extraction with another 25 mL portion of 5% base. This time, as the lower layer is drawn off, check it with a red litmus paper for basicity. If the aqueous layer is not yet basic, continue to extract the organic layer with 25 mL portions of 5% base. A total of 3 extractions are necessary. Once the acetic acid has been removed, add a final 25 mL portion of distilled water plus a 5 mL portion of saturated sodium chloride. Gently swirl the funnel contents but do not shake, to prevent an emulsion from farmina Carafudhu drnin of the lower DALAM Inuor to wnet. Moudrain the remainin arannin