should follow the guidelines given in the nting Lab Reports\" chapter of the Han
ID: 1088578 • Letter: S
Question
should follow the guidelines given in the nting Lab Reports" chapter of the Handbook. In addition to these guidelines, most experiments witl specify additional topics to discuss. For this particular experimen t, your conclusions should include: . Report which of the unknown analgesics you were given, based on TLC and melting point . Calculate Ris of all spots, and explain the differences in results of the two different solvent systems. List the four known analgesics in order of polarity Address how pure your compound was, based on its melting point and TLC Report whether or not the pain reliever tablet had the analgesic reported on the label. . 1) Consider the following silica gel TLC plate of compounds A, B, and C developed in hexanes: 5 cm- 3 cm- 1 cm- 0 cm- a. Determine the Revalues of compounds A, B, and C b. Which compound is the most polar? c. What would you expect to happen to the Re values if you used acetone instead of hexanes as the eluting solvent? d. How would the R values change if eluted with hexanes using an alumina TLC plate? 2) What could happen if you used ink to draw in your base line and letters on the TLC plate? 3) What could happen if you spot too much of a compound on the TLC plate? 4) What would happen if your solvent level is above the level of the initial spots? 5) The CRC lists the melting point for a compound as 182-183°C. You observe a melting point for this same compound isolated in your experiment as 177-181°C.What can you conclude about the compound isolated in your experiment?Explanation / Answer
5. So you isolate the compound and found that the melting point is lower 2-3*C than the literature melting point. The melting point is almost same as the literature. Your isolated compound is the same compound. See the difference in melting point by 1 or 2 degree may occurs due to various reason. The literature melting point is taken with 100% pure compound. But your isolated product may not be as pure as the previous one. So in that case melting point may differ by a very small margins.
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