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50. For the following compound how many different signals would you see in the proton NMR?...
18) How many signals would you expect to see in the 1H NMR spectrum of the following compound? 18) NI CH3CH2CH2CCH3 A) 6 B) 4 C)2 D) 5 E) 3 3 19) What splitting pattern is observed in the 1H NMR spectrum for the indicated hydrogens? OCH CH3 19) - D) quartet E) septet A) singlet B) doublet C) triplet 20) Which of the following alcohols dehydrates most rapidly? 1 -OH IV. CH3- 20) CH3- II. CH3 OH Cox HO...
How many 1H-NMR signals would be in the spectrum for the following compound? Diastereotopic hydrogens would produce different signals. What is the splitting pattern for Ha in the following structure? Which of the following methyl group will have the furthest upfield chemical shift? How many 'H-NMR signals would be in the spectrum for the following compound? Diastereotopic hydrogens would produce different signals. (R)-2-iodo-pentane a. 5 b. 6 c. 7 d. 4 What is the splitting pattern for Ha in the...
II. NMR Spectroscopy. Show your work with some brief notes/explanations and any calculations as needed. 1. The expected 'H NMR spectrum of the following compound is expected to have signals with multiplicities A. three; two doublets and a triplet C.four, two singlets, a double and a triplet E. None of these B.three; a singlet, a doublet and a quartet D.four, two singlets and two triplets 2. Which of the following is the best prediction of the chemical shifts for the...
How many signals would you expect in the 1H NMR spectrum of (CH3)2CHCH2CH2CH3? 20. How many signals would you expect in the 1H NMR spectrum of (CH32CHCH2CH2CH3? A) 1 OB) 2 C) 3 D) 4 OE) 5 19. which compound has the H NMR shown below? 0 10 9 8 7 ppm O A) o B) o c) o D) O E)
Question 19 (2 points) How many signals would you expect in the 'H NMR spectrum of the following compound? O a) 4 Ob) 5 O c) 6 d) 7 Question 20 (2 points) A compound with a molecular formula of C10H1202 has the following TH NMR spectrum. Which of the following structures is consistent with this spectrum? It til OCH,CH,CH o CH2CH2CHE 11 OH OH CH2CH2CH3 CH2CH2CH3 III IV O a) 1 Ob) III Oc) Od) IV
explain 02. A compound with a molecular formula C&H SCIO, has the following 'H NMR spectrum. The IR spectrum shows strong absorption at 1800 cm!. Which of the following structures is consistent with this spectrum? PPM علی علی معلم A) I B) II C) III D) IV E) none of these 89. A compound with a molecular formula C10H1202 has the following 'H NMR spectrum. Which of the following structures is consistent with this spectrum? 11 10 9 8 2...
How many different proton signals would the following compound show in its 1H NMR spectrum? Me) 13r OMe A. 1 B. 3 C. 5 D. 6
How many signals would you expect to see in the 1H NMR spectrum of the following compound? CH3CH2CHCH: CI OOOO
3. For the compound dimedone, how many different signals would you see in the proton NMR? (Assume that you can see them all.) A) 2 в) з c) 4 D) 5 E) None of these choices.
Question 3 [1.4 pts] How many unique signals will be exhibited in the proton NMR spectrum of compound C? CH3 CI CH3 CI Compound C Compound D Compound E Question 4 [1.4 pts] How many unique signals will be exhibited in the proton NMR spectrum of compound D? Question 5 [1.4 pts] How many unique signals will be exhibited in the proton NMR spectrum of compound E?