Lab 2: 6. Make a sketch of the 1H NMR spectrum th…


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Lab 2: 6. Make a sketch of the 1H NMR spectrum that would be observed for benzil. 8. Based on the ultraviolet data given for benzil in the Purification and Characterization section of the experiment indicated in your lab text book, pg. 433-434, what concentration of the benzil must have been used if a 1-cm cell was employed, and a maximum absorption of 0.5 was observed? 23. Based on the experiment mentioned in your lab text book, pgs. 468-470, which is more nucleophilic: hydroxide ion (HO-) or ammonia (NH3)? Explain. Lab 3: 3. As mentioned in the discussion (see your lab textbook, pgs. 474-476), ketones generally give poor yields in the Knoevenagel reaction with diethyl malonate. However, the reaction with ketones gives good yields with ethyl cyanoacetate and malonitrite. Explain. 10. Consider the stereochemistry of the carbocation intermediate formed under the conditions of Part A. As starting material used in this experiment, erythro-2,3-dibromo-3-phenylpropanoic acid, is racemic, the enantiomer of the carbocation shown must also be generated. Does the other enantiomer lead to the same diastereomer (cis) of the product or does it lead to the trans diastereomer? Lab 4: 11. Several 60-MHZ 1H NMR spectra are given in your lab textbook on pp. 673-5 (see questions #9-16, 9-17, 9-18, 9-19, and 9-20) along with the molecular formula of the compound. You should be able to account for at least one acceptable structure and for all of the observed resonances. C4H8O. Spectrum a (pg. 582, Fig. 9.36). 12. See question # 11 and solve for C3H6O2. Spectra b and c. Two compounds with the same empirical formula (pp. 582-583, Fig. 9.37 a, 9.37 b). 13. See question # 11 and solve for C4H8O. Spectrum d. also give some thought to the weak resonances at 0.5 and 1.8 ppm (pg. 583, Fig. 9.38). 14. See question # 11 and solve for C7H7Cl. Spectrum e. (Pg. 583, Fig. 9.39). 15. See question # 11 and solve for C8H10O. Spectrum f. (Pg. 584, Fig. 9.40).,How far along are you? Please send update. Thanks.,I know you are working on the assignment but the due date was yesterday. I don’t think it is too much to ask when you will be done.,I have 10 questions here: Lab 2 has questions 6, 8, and 23 Lab 3 has questions 3 and 10 Lab 4 has questions 11, 12, 13, 14, and 15 I cannot follow your labeling of the answers and there doesn’t appear to be 10 answers. Please clean this up. I really cannot read your diagram either. Lable the answer to Lab 2 question 6 as such and Lab 2 question 8. Lab 2 6)here is the answer 8)here is the answer 23)here is the answer Lab 3 3)here is the answer 10)here is the answer Lab 4 11)here is the answer 12)here is the answer 13)here is the answer 14)here is the answer 15)here is the answer This is the format I want. I cannot follow your numbering of 1, 2, 3, 8.55, 8.57 (b and c), 8.54, and 8.56,Upon further review, I know that you haven’t answered all of my questions. Please address this immediately.,I don’t know what it means to write the question in serial. I don’t know how to make this any more clear to you. I have three labs here: lab 2, lab 3, and lab 4. Each lab has a few question which I couldn’t figure out. For lab 2 I need question #6 and 8 answered. Some of the questions require reading the lab book or understanding a graph or diagram. For these I scanned my lab book and tried to reference these pages to the questions. The numbering of questions in the lab book doesn’t exactly follow my lab questions do ignore that. All you need to do is see that I need the information needed as I submitted the questions to you. For lab 2 #6 I just need the sketch of The 1H NMR for benzil. For lab 2 #8 read Purification and Classification on pages 433-434 that I have attached to answer the question about benzil. Does that make sense? I need this no later than Sunday night. Can you do this? If not please refund me and have someone else do it.,If it helps, please call me on my cell phone. The number is 208-406-9052.,Lab 4 looks good for questions 12, 13, 14, and 15 but question 11 is missing (You should be able to account for at least one acceptable structure and for all of the observed resonances of C4H8O from spectrum a, pg. 582, Fig. 9.36). I assume you are turning in to me each lab as you complete them? I still need clarification on your initial answers (which questions they actually answer) so I can see what is left. Thanks. Could you please number the answers according to the questions though instead of in serial (whatever that means). I don’t understand this method and accounts for a lot of confusion on my part. Thanks.

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20.50