Wintergreen from Aspirin:1. In isolating the salicylic acid, why is it important to press out as much of the water as possible?2. Write the mechanism of the esterification reaction you did.3.What characteristic absorption band changes would you expect in the IR spectrum on going from aspirin to salicyclic acid andthen to methyl salicylate as you did in the experiment today? Give approximate wavenumbers associated with each functionalgroup change.What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? Whatother impurities are present in your product and how do you know?

1. Importance of Pressing Out Water in Salicylic Acid Isolation: Getting rid of as much water as…

Answered: Wintergreen from Aspirin: 1. In…

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter19: Alkenes From Alcohols: Cyclohexene From Cyclohexanol

Section: Chapter Questions

Problem 1Q

See similar textbooks

Similar questions

Purity of the ester: use the colour of the product and the information from the infrared spectrum to assess the purity of the ester. The color of product was yellow. Was orang Odour made with acetic acid on a 0.10 molar ratio and 1-Octanol 0.05 molar ratio.
1. at what wavelength was Pb determined? 2. What is the slope of the calibration curve? 3. What is the y-intercept of the calibration curve? 4. The researcher determined the Pb content of water sample from a river suspected to be contaminated with Pb from a nearby factory by complexing with cyanidine and the absorbance measured was 0.405. What is the lead content of the water sample?
In the esterification of propanoyl bromide and isopropyl alcohol what product is expected? Create a detailed numbered procedure for the esterification including moles, grams and volume for all reactants and show calculations as to how much grams of product you expect to produce. Include IR peaks and the number of carbon and proton NMR peaks you expect.
Interpret the NMR results in terms of purity. What should a chemist do to improve the yield or purity of the product? Discuss the key parts of the NMR for the starting material and pure product. Focus on the peaks that show up after 3 ppm. For the starting material, discuss what those 2 peaks (around 3.5 ppm and 4.7 ppm) correspond to in the structure of cyclohexanol. For the pure product, discuss why those 2 peaks are missing, and there is a new peak for 2H at around 5.6 ppm. Then, discuss the NMR for your actual product from the reaction. Does it contain pure product? If not, what else is there? How do you know this based on the NMR? Based on your understanding of the reaction and LeChatelier’s principle, how can you improve the reaction yield? How can you better purify the reaction product?
Describe how you would process palm oil samples adulterated with Sudan IV dye prior to Raman spectroscopy. Explain also how you would go about to analyze the sample using the raman spectroscopy to gain qualitative and quantitative information about the dye
Maletic anhydride 1,4-dimethoxybenzene benzil anthracene benzaldehyde benzoic acid 3-nitrophthalic acid salicylic acid benzophenone
A sample of tert-butyl bromide (2-bromo-2-methyl propane) has been contaminated with some methyl bromide. The NMR spectrum of this sample shows two signals, one at 1.8 ppm and one at 2.2 ppm, corresponding to these two compounds respectively. The integrals of the two signals equate to 6:1 respectively. What is the mole percent of each compound in the mixture, or phrasing it another way, what percentage of the mixture is tert-butyl bromide and what percentage is methyl bromide? Your objective is to answer this question, explaining how you reach your decision.
What happens to emission intensity when KI is added to a fluorescein solution and why?
Using the attached infrared spectroscopy spectrum for the compound Ethyl Pentanoate, identify the functional group and any observed characteristic absorbtions in cm-1. Compare with the attached roadmap for interpreting IR spectra.
Given your knowledge of 1H NMR, fill in a table like the one shown below for the vanillin that was obtained using deuterochloroform as the solvent and tetremethylsilane for the chemical shift standard. Peak Label Chemical Shift (δ) Integration Splitting Pattern Assignment A 7.8 2 Multiplet B 6.7 2 Multiplet C 4.2 2 Quartet D 3.0 6 Singlet E 1.3 3 Triplet
Using the attached infrared spectroscopy spectrum for the compound Heptanoic Acid, identify the functional group and any observed characteristic absorbtions in cm-1. Compare with the attached roadmap for interpreting IR spectra.
Using the attached infrared spectroscopy spectrum for the compound Tetrahydrofuran, identify the functional group and any observed characteristic absorbtions in cm-1. Compare with the attached roadmap for interpreting IR spectra.

SEE MORE QUESTIONS

Recommended textbooks for you

Macroscale and Microscale Organic Experiments

Chemistry

ISBN:

9781305577190

Author:

Kenneth L. Williamson, Katherine M. Masters

Publisher:

Brooks Cole

EBK A SMALL SCALE APPROACH TO ORGANIC L

Chemistry

ISBN:

9781305446021

Author:

Lampman

Publisher:

CENGAGE LEARNING - CONSIGNMENT

Organic Chemistry

Chemistry

ISBN:

9781305080485

Author:

John E. McMurry

Publisher:

Cengage Learning

Macroscale and Microscale Organic Experiments

Chemistry

ISBN:

9781305577190

Author:

Kenneth L. Williamson, Katherine M. Masters

Publisher:

Brooks Cole

EBK A SMALL SCALE APPROACH TO ORGANIC L

Chemistry

ISBN:

9781305446021

Author:

Lampman

Publisher:

CENGAGE LEARNING - CONSIGNMENT

Organic Chemistry

Chemistry

ISBN:

9781305080485

Author:

John E. McMurry

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS