Into how many peaks will each of the circled protons be split? (Assume complete resolution of all NMR peaks is possible) CI H Br ៩១ - CH₂ H₂C -OH Multiple Choice 1 = 2:11= 6; 111=4 1=211=7:111=4 1=2,11=7,111=3 1=3,11=7 = 4 III -CH₂

Question in attached file

Interpretation of H1 NMR of C6H12O

Hand written solution only

Q-1. questions: Study the structure of this molecule and answer the following 7 10 8 i) How many different 1C-NMR signals yõu would expect? ii) Which one of the two-carbonyl carbons (C-1 or C-9) has lower chemical shift than the other? Еxplain: iii) What is the chemical shift in Ivalue you would expect for C-8? iv) Which carbon atom in benzene ring is most deshielded?

12 olot Sketch of ¹H NMR spectrum: ¹H NMR ofot 220 13C NMR sketch Chemical Shift (ppm) Chemical Shift (ppm) 0 0

Number of C-NMR signals in the given compound is to be identified and the number of peaks of each NMR is to be stated

v Instructions Question 18 What is the correct assignment in the number of peaks in the H NMR spectra of th Br Br Br Br Br Br II II O I = 3 signals; II = 2 signals; III = 3 signals. O I = 4 signals; II = 4 signals; III = 4 signals. O I = 2 signals; II = 3 signals; III = 1 signals. O I = 3 signals; II = 3 signals: III = 2 signals. • Previous

H NMR (300 mMHz, CDCl3, 21C) 0.92 ppm (t, 3H, J = 7Hz), 1.20 (s, 6H), 1.50 (q, 2H, J = 7 Hz), 1.64 (broad singlet, 1H). Choose the chemical shift of the three lines in the triplet signal at 0.92 ppm? (Select all correct answers) a b с d f b0 0.920 ppm 0.897 ppm 0.943 ppm 7.920 ppm 6.080 ppm 0.998 ppm 0.842 ppm

Which of the following is the best prediction of the chemical shifts for the signals in the H NMR spectrum for the following compound? O O A B. C. D. 1=0.9 ppm, 11-2.7 ppm, Ill-1.2 ppm, IV-0.9 ppm 1-1.1 ppm, 11-3.2 ppm, Il-1.4 ppm, IV-0.9 ppm 1-0.9 ppm, 11-1.7 ppm, Il-1.2 ppm, IV 1.1 ppm 1-0.9 ppm, 11-1.9 ppm, III-3.4 ppm, IV-0.9 ppm IV 1024 x