Question 13 H2C CH3 H20 HO CH3 SCH ОН A CH3 C Which one of these compounds would have an absorption in the IR at 1700 and at 1650 but none at 3200-3600? Table of IR and 'H NMR Absorptions IR bands in cm O-H in alcohols and phenols, N-H O-H in acids C-H vinyl or aromatic C-H alkyl C=C and C=N C=0 Alkene C-C Aromatic ring C-C 3200-3600 2400-3600 3000-3100 2800-3000 2100-2260 1670-1750 1620-1680 1600, 1500, 1450 (2 or 3 bands)

Question 13 H2C CH3 H20 HO CH3 SCH ОН A CH3 C Which one of these compounds would have an absorption in the IR at 1700 and at 1650 but none at 3200-3600? Table of IR and 'H NMR Absorptions IR bands in cm O-H in alcohols and phenols, N-H O-H in acids C-H vinyl or aromatic C-H alkyl C=C and C=N C=0 Alkene C-C Aromatic ring C-C 3200-3600 2400-3600 3000-3100 2800-3000 2100-2260 1670-1750 1620-1680 1600, 1500, 1450 (2 or 3 bands)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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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?
Question 5 Which of the following protons appears furthest downfield in the ¹H NMR spectrum? b H -C H OO O O a➜ H a d b -I H d -He
Can you please confirm if this H-NMR spectrum belongs to this molecule and identify the signals of each spectrum.
7 nts eBook Print eferences attempt left dimethyl succinate Check my work Select the single best answer. Compound A exhibits two singlets in its ¹H NMR spectrum at 2.64 and 3.69 ppm and the ratio of the absorbing signals is 2:3. Compound B exhibits two singlets in its ¹H NMR spectrum at 2.09 and 4.27 ppm and the ratio of the absorbing signals is 3:2. Which compound corresponds to dimethyl succinate and which compound corresponds to ethylene diacetate? ethylene diacetate Compound A is dimethyl succinate; Compound B is ethylene diacetate. Compound A is ethylene diacetate; Compound B is dimethyl succinate.
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QUESTION 8 Which IR frequency range can differentiate a carboxylic acid from an alcohol? 3200 cm-1 1700 cm-1 900 cm-1 1210 cm-1
Can you elaborate step by step if this H-NMR is correct or not?
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Unknowns for 1H NMR Final Report 10) Chemical Formula: C₁₂H1s (hard to see but, all peaks that integrate to 1H are doublet of doublets) IR: peak at 1650cm-1 2H 10 2H 1H u 7 1H 11) Chemical Formula: C₁0H12O2 IR: strong peak 1720cm-¹ 6 1H 1H 1H 8 12) Chemical Formula: C₂H₂00 IR: strong broad 3300cm-1 5 2H 2H 1H 3 4 PPM 6 PPM -3 septet 1H PPM 9H 6H 18H 0