– One abstract with results from both labs; keep the abstract under 250 words.
– One introduction about the synthesis of Aspirin, explain why saponification and esterification are important reactions and how they are used in the real world. You should cite ALL your sources and use superscript numbering.
– Discussion:
– One table of reagents where you add all the reagents used in both labs. Do not forget the calculations.
– Explain the results in two parts.
Part I will include the saponification, explain and show the mechanism. Explain the results with the IR (include the spectrum in here), the melting point (was it pure or not? Remember that the narrower the range is, the purer the compound is), and yield.
Part II will include today’s information. Explain and show the esterification mechanism. Explain the results of IR, show and explain the functional groups you should see, and compare it with the previous one. You should have different frequencies for OH from the last lab, and the ester group from today’s lab. Include NMR spectrum, and peak assignation with the structure drawn in the spectrum. Include the yield.
– Half of you got aspirin, and half did not. Please check your NMR spectrum, the zoomed-in part. If you have a doublet, triplet, chloroform, doublet, and triplet overlapped, you do not have your product. That means that your esterification never happened because of the wrong calculation of the equivalents or because you forgot to add the phosphoric acid. So, what you have is the NMR of the salicylic acid. If the doublet and triplet are not overlapping, then you have aspirin. So, the correct order of the aromatic peaks should be doublet, triplet, triplet, chloroform, and doublet.
The correct IR should have a peak for the ester around 1750, and the peak of the OH around 3200 should not be there.
If you did not obtain the aspirin, please use the following NMR to explain and compare your spectrum with the correct spectrum (include both in your report: yours and the good one): Aspirin NMR
All the figures must have the correct format, must be mentioned in the text, and must be placed after the paragraph where they are mentioned.
The template says something about TLC, but we did not do it. So, ignore the TLC part.
– Experimental:
Divide it into two parts, and explain briefly what you did in each part.
Do not forget to use the official NMR format. I posted an announcement on D2L. You can find an example in the general format: formal lab report
– One conclusion for both experiments.
References: use the ACS style only, please.
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