Homework Answers
6. IR clearly shows two peaks at 2600 and 2700 Cm-1 for C-H stretching of aldehyde
it also shows C=O stretching at 1700 cm-1 for aldehyde carbonyl
all the above indicates the presence of aldehyde functional group
compound A has aldehyde group.
answer is Compound A (Benzaldehyde)
7. IR does not shows any broad peak above 3000 cm-1 ,
it must not be alcohol , carboxylic acid or Amine or primary amide
It shows carbonyl stretching at 1700 cm-1
the above data indicates it is a ketone
so answer is B
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6) Which compound would produce this IR spectrum? Wavelength, (um) 3,5 4 4,5 5 5,5 6 6,5 7 8 9 10 12 14 18 2.52,7 3 100...
4) Which structure is consistent with this IR spectrum? 2.5 27 3 3,5 Wavelength, (um) 4...
4) Which structure is consistent with this IR spectrum? 2.5 27 3 3,5 Wavelength, (um) 4 4,5 5 5,5 6 6,5 7 8 9 10 12 14 18 4000 3500 3000 2500 2000 1800 1600 1400 12001000 800 600 400 Wavenumber, (cm) (A) (B) CH3(CH2).CH OCCH; CHCH).CH_OČCH, B) ChọCh> OH CH(CH2) 10COH (C) CHCH_CHE (D) HOCH_CH»ČCH, 5) Which compound corresponds to this IR spectrum? 1 2.527 3 3,5 Wavelength, (um) 4 4,5 5 5,5 6 6,5 7 8 9 10...
2) Which is the most reasonable structure for a compound with this IR spectrum? Wavelength, (um)...
2) Which is the most reasonable structure for a compound with this IR spectrum? Wavelength, (um) 2.2 2.4 2.6 3 3,5 4 4,5 5 5,5 6 1 8_9 10 11 12 13 14 16 MAN 4600 4000 3500 3000 2500 2000 1500 Wavenumber, (cm) 1000 800 600 (A) (B) ОН CH3(CH2)4-C=C-COCH; CH(CH2)3-C=C-CHCH (C) (D) H-C=C-(CH2)4CCH3 CH3(CH2)4-CH=CH-CH 3) Which structure is consistent with following IR spectrum? * 2.527 3 Wavelength, (um) 3,5 4 4,5 5 5,5 6 6,5 7 8 9...
Correct answer is A. Explain. 7. Which compound would produce this I spectrum? Wavelength, (um) 4...
Correct answer is A. Explain.
7. Which compound would produce this I spectrum? Wavelength, (um) 4 4,55 5,5 6 6,5 52,7 3,5 10 12 14 1 100 80 s 60 40 a 20 4000 3500 3000 2500 2000 1800 1600 1400 12001000 800 600 400 Wavenumber, (cm-1) CH 1I ??? (C) O CH3 COCH3
exercises for Lab report grades-2.pdf (page 3 of 5)- Q Search 4) Which structure is consistent...
exercises for Lab report grades-2.pdf (page 3 of 5)- Q Search 4) Which structure is consistent with this IR spectrum? Wavelength, (um) 3,5 4 4,55 5,5 6 6,5 7 2.527 3 100 89 10 12 14 18 T 80 n s 60 40 a 20 n 4000 3500 3000 2500 2000 1800 1600 1400 12001000 800 600 400 Wavenumber, (cm-) (B) (A) CH CHОСОН CH:;CH>,СH,ОССH, (D) (C) носн-СH>,ССH, CH3(CH2)sCH terminology 5) Which compound corresponds to this IR spectrum? W Window...
exercises for Lab report grades-2.pdf (page 3 of 5)- Q Search 4) Which structure is consistent...
exercises for Lab report grades-2.pdf (page 3 of 5)- Q Search 4) Which structure is consistent with this IR spectrum? Wavelength, (um) 3,5 4 4,55 5,5 6 6,5 7 2.527 3 100 89 10 12 14 18 T 80 n s 60 40 a 20 n 4000 3500 3000 2500 2000 1800 1600 1400 12001000 800 600 400 Wavenumber, (cm-) (B) (A) CH CHОСОН CH:;CH>,СH,ОССH, (D) (C) носн-СH>,ССH, CH3(CH2)sCH terminology 5) Which compound corresponds to this IR spectrum? W Window...
The IR spectrum of compound E (C8H6) is shown in the figure below. What is the...
The
IR spectrum of compound E (C8H6) is shown in the figure below. What
is the structure of E?
2. The IR spectrum of compound E (C&He) is shown in the figure below. Compound E reacts with bromine in carbon tetrachloride and has an IR absorption band at about 3300 cm What is the structure of E? Wavelength (um) 2.5 7 8 9 10 12 15 20 30 40 005 0.10 020 0.30 0 40 0.50 0.60 0.80 2.0 4000...
6. An unknown compound, CsH10O2, gives the NMR and IR shown below. Propose a structure. wavelength...
6. An unknown compound, CsH10O2, gives the NMR and IR shown below. Propose a structure. wavelength (m) 9 10 11 12 13 14 15 16 100 80 60 40 20 ol 4000 3500 3000 2500 1400 1200 1000 800 2000 1800 1600 wavenumber(cm) 600 SOHE 5.5.6 7.11 70 690 200 156 LA 1.6 10 8 (ppm)
Consider the data provided in appendix B containing the mass spectrum, the IR spectrum and the...
Consider the data provided in appendix B containing the mass spectrum, the IR spectrum and the 'H NMR of an unknown compound. Determine the structure of this compound base on the data provided. (Make sure to show your work). 100 80 117 M 60 abundance 40 20 . = . 0 10 20 30 40 50 60 70 80 90 100 110 120 130' 140' 150 160 3.5 wavelength (um) 5.5 4.5 6 7 8 9 10 11 12 13...
Determine whether the compound is an akane, an alkene, an alkyne, or an aromatic hydrocarbon. More...
Determine whether the compound is an akane, an alkene, an alkyne, or an aromatic hydrocarbon. More than one unsaturated group may be present. wavelength (am) 2.5 100b 33,5 4 4,5 5 5,5 6 7 89 10 11 12 13 14 15 16 80 60 N 40 T 20 4000 3500 3000 2500 2000 1800 1600 1400 1200 1000 800 600 wavenumber (em- Check all that apply. a alkane alkene alkyne Q aromatic hydrocarbon Previous Answers Request Answer
Circle which compound matches the given IR spectrum (4 pts): =O 2.6 2.8 3 3.5 4 4.5 wavelength, micrometers 5 5.5 6...
Circle which compound matches the given IR spectrum (4 pts): =O 2.6 2.8 3 3.5 4 4.5 wavelength, micrometers 5 5.5 6 7 8 9 10 11 12 13 14 1516 percent transmittance 800 600 3800 3400 3000 2600 2200 2000 1800 1600 1400 1200 1000 wavenumber, cm1 2. For the following compounds, how many signals would you expect to see in the 'H NMR spectrum (6 pts)? Сн, сн, HH
4) Which structure is consistent with this IR spectrum? 2.5 27 3 3,5 Wavelength, (um) 4 4,5 5 5,5 6 6,5 7 8 9 10 12 14 18 4000 3500 3000 2500 2000 1800 1600 1400 12001000 800 600 400 Wavenumber, (cm) (A) (B) CH3(CH2).CH OCCH; CHCH).CH_OČCH, B) ChọCh> OH CH(CH2) 10COH (C) CHCH_CHE (D) HOCH_CH»ČCH, 5) Which compound corresponds to this IR spectrum? 1 2.527 3 3,5 Wavelength, (um) 4 4,5 5 5,5 6 6,5 7 8 9 10...
2) Which is the most reasonable structure for a compound with this IR spectrum? Wavelength, (um) 2.2 2.4 2.6 3 3,5 4 4,5 5 5,5 6 1 8_9 10 11 12 13 14 16 MAN 4600 4000 3500 3000 2500 2000 1500 Wavenumber, (cm) 1000 800 600 (A) (B) ОН CH3(CH2)4-C=C-COCH; CH(CH2)3-C=C-CHCH (C) (D) H-C=C-(CH2)4CCH3 CH3(CH2)4-CH=CH-CH 3) Which structure is consistent with following IR spectrum? * 2.527 3 Wavelength, (um) 3,5 4 4,5 5 5,5 6 6,5 7 8 9...
Correct answer is A. Explain.
7. Which compound would produce this I spectrum? Wavelength, (um) 4 4,55 5,5 6 6,5 52,7 3,5 10 12 14 1 100 80 s 60 40 a 20 4000 3500 3000 2500 2000 1800 1600 1400 12001000 800 600 400 Wavenumber, (cm-1) CH 1I ??? (C) O CH3 COCH3
exercises for Lab report grades-2.pdf (page 3 of 5)- Q Search 4) Which structure is consistent with this IR spectrum? Wavelength, (um) 3,5 4 4,55 5,5 6 6,5 7 2.527 3 100 89 10 12 14 18 T 80 n s 60 40 a 20 n 4000 3500 3000 2500 2000 1800 1600 1400 12001000 800 600 400 Wavenumber, (cm-) (B) (A) CH CHОСОН CH:;CH>,СH,ОССH, (D) (C) носн-СH>,ССH, CH3(CH2)sCH terminology 5) Which compound corresponds to this IR spectrum? W Window...
exercises for Lab report grades-2.pdf (page 3 of 5)- Q Search 4) Which structure is consistent with this IR spectrum? Wavelength, (um) 3,5 4 4,55 5,5 6 6,5 7 2.527 3 100 89 10 12 14 18 T 80 n s 60 40 a 20 n 4000 3500 3000 2500 2000 1800 1600 1400 12001000 800 600 400 Wavenumber, (cm-) (B) (A) CH CHОСОН CH:;CH>,СH,ОССH, (D) (C) носн-СH>,ССH, CH3(CH2)sCH terminology 5) Which compound corresponds to this IR spectrum? W Window...
The
IR spectrum of compound E (C8H6) is shown in the figure below. What
is the structure of E?
2. The IR spectrum of compound E (C&He) is shown in the figure below. Compound E reacts with bromine in carbon tetrachloride and has an IR absorption band at about 3300 cm What is the structure of E? Wavelength (um) 2.5 7 8 9 10 12 15 20 30 40 005 0.10 020 0.30 0 40 0.50 0.60 0.80 2.0 4000...
6. An unknown compound, CsH10O2, gives the NMR and IR shown below. Propose a structure. wavelength (m) 9 10 11 12 13 14 15 16 100 80 60 40 20 ol 4000 3500 3000 2500 1400 1200 1000 800 2000 1800 1600 wavenumber(cm) 600 SOHE 5.5.6 7.11 70 690 200 156 LA 1.6 10 8 (ppm)
Consider the data provided in appendix B containing the mass spectrum, the IR spectrum and the 'H NMR of an unknown compound. Determine the structure of this compound base on the data provided. (Make sure to show your work). 100 80 117 M 60 abundance 40 20 . = . 0 10 20 30 40 50 60 70 80 90 100 110 120 130' 140' 150 160 3.5 wavelength (um) 5.5 4.5 6 7 8 9 10 11 12 13...
Determine whether the compound is an akane, an alkene, an alkyne, or an aromatic hydrocarbon. More than one unsaturated group may be present. wavelength (am) 2.5 100b 33,5 4 4,5 5 5,5 6 7 89 10 11 12 13 14 15 16 80 60 N 40 T 20 4000 3500 3000 2500 2000 1800 1600 1400 1200 1000 800 600 wavenumber (em- Check all that apply. a alkane alkene alkyne Q aromatic hydrocarbon Previous Answers Request Answer
Circle which compound matches the given IR spectrum (4 pts): =O 2.6 2.8 3 3.5 4 4.5 wavelength, micrometers 5 5.5 6 7 8 9 10 11 12 13 14 1516 percent transmittance 800 600 3800 3400 3000 2600 2200 2000 1800 1600 1400 1200 1000 wavenumber, cm1 2. For the following compounds, how many signals would you expect to see in the 'H NMR spectrum (6 pts)? Сн, сн, HH
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