Essay on Exam: Experiment and Eucalyptus Oil

Submitted By tht101020
Words: 936
Pages: 4

Introduction

The purpose of this experiment was to prepare the Diels-Alder adduct of the unknown conjugated diene in “eucalyptus oil”, separate the adduct, and identify the unknown diene from the melting point of its adduct
Experimental Method

Measure 10ml of anhydrous diethyl ether, and 5g eucalyptus oil, 3.61g powdered maleic anhydrous. Then mixed them together, the color turn a neon yellow. Reflux on the steam bath water for 45 minutes with aluminum foil covered the round bottom flask. Transfer the mixture into a small Erlenmerer flask when it warms. Cover the flask with watch glass and let it cool down to room temperature. The mixture of white and yellow crystal was formed when it reached room temperature. The crystals were isolated by vacuum filtration and washed with cold low boiling petroleum ether. The crude crystal were purified by dissolving the adduct in dry methanol and allowing the adduct to recrystallize. The mass of product was 5.56g and the melting point was range from 98-100.5C

Discussion / Conclusion

He melting point The purpose of this experiment was to prepare the Diels-Alder adduct of the unknown conjugated diene in “eucalyptus oil”, separate the adduct, and identify the unknown diene from the melting point of its adductof the adduct proved that the diene in the eucalyptus oil was phellandrene

For the Introduction:

State the nature of the project and the approach to answering the question.

For the Experimental section:

Give a brief summary in your own words of the procedure, weaving in your observations/results, in as clear and concise a manner as possible. Include masses and millimoles for reactants and products, solvent volumes, etc., with values in parentheses after the substance name. Do not copy an experimental procedure from a book or give a blow by blow restatement of your notebook.

Include any data from physical or chemical characterizations done on your end product. Data should be inserted in the Experiemtal where it was collected. Data includes MP, BP, IR, NMR, GC data, etc. % yield or % recovery should be included at each point you were measured material mass.

This section should reflect your attached notebook pages. I don’t care if the notebook pages are messy (poorly written, mark throughs, spills, etc.). Notebooks are not to be rewritten, polished, or “prettied up.” They should accurately reflect the work performed as it is performed, a “real time” narrative. Remember, notebooks are considered admissible evidence in patent disputes in courts of law. A messy book is more believable than one that looks “copied.”

For the Discussion / Conclusion section:

Give a brief summary of your findings. Include an analysis from comparing your product characterization data to literature values. Did you get the product expected? In good yield? Why or why not? Suggestions for improvements? Follow on work? Wrap your experiment into a cool little package here. Well written, clear conclusion.

Introduction

The purpose of this experiment was to prepare the Diels-Alder adduct of the unknown conjugated diene in “eucalyptus oil”, separate the adduct, and identify the unknown diene from the melting point of its adduct
Experimental Method

Measure 10ml of anhydrous diethyl ether, and 5g eucalyptus oil, 3.61g powdered maleic anhydrous. Then mixed them together, the color turn a neon yellow. Reflux on the steam bath water for 45 minutes with aluminum foil covered the round bottom flask. Transfer the mixture into a small Erlenmerer flask when it warms. Cover the flask with watch glass and let it cool down to room temperature. The mixture of white and yellow crystal was formed when it reached room temperature. The crystals were isolated by vacuum filtration and washed with cold low boiling petroleum ether. The crude crystal were purified by dissolving the adduct in dry…