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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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
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
Which of the following statements are true regarding the following compound? (Select all apply, Points will be deducted for incorrect answers) O NH₂ This compound shows m/z 43 fragment in mass spectrum In broad band decoupled 13C NMR spectrum, this compound shows 11 signals IR spectrum shows a strong peak around 1715 cm-1 In ¹H NMR spectrum, this compound shows 6 signals IR spectrum shows a moderate, sharp peak around 1600 cm-¹ The compound shows a peak above 200 nm in UV-visible spectrum IR spectrum shows a moderate, sharp peak around 2230 cm! H
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Problem 8 114 IR Spectrum (quid fim) 4000 3000 2000 1600 1200 V (cm') 800 100 80 Mass Spectrum 57 More branch 60 E Co M 114 ( 1%) No significant UV 40 absorption above 220 nm 20 99 CBH18 2メ8k8-み8) 16 18-(6) 40 80 120 160 200 240 280 m/e 13C NMR Spectrum (50 O MHz. CDCI, solution) DEPT CH, CH,t CHt KAS ASym. 1500 solvent proton decoupled CAl3 Sym o 8(ppm) 340 200 160 120 80 40 1H NMR Spectrum (200 MHz. CDCIg solution) TMS 2 8. 7 6. 5 4 8 (ppm) 10 Sof base peak
Problem 7 Mll IR Spectrum 2240 KBr dac) 4000 3000 2000 1600 1200 800 v (cm') 100 Mass Spectrum 80 60 63 40 No significant UV 40 M- 80 absorption above 220 nm 20 CAHAN2 40 80 120 160 200 240 280 m/e 13C NMR Spectrum (100 O MHz, CDCI, solution) DEPT CH, CHt CH proton decoupled solvent 160 120 80 40 8 (ppm) 200 1H NMR Spectrum (400 MHz, CDCI, solution) TMS 6. 4 2 8 (ppm) 10 8 96 wad aseq jo
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