2. Based on Appendix 1, identify any two (2) significant bonds and the approximate wavenumbers associated with the following compounds. (Write your answer in the given table) a) CH3CH₂OH Bond b) CH3OCH3 Bond Wavenumbers (cm-¹) Bond Wavenumbers (cm-¹1) c) Crotonaldehyde, CH3CH=CHCHO Wavenumbers (cm-¹)

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Chapter1: Chemical Foundations
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2.
Based on Appendix 1, identify any two (2) significant bonds and the approximate
wavenumbers associated with the following compounds. (Write your answer in the
given table)
a) CH3CH₂OH
Bond
b) CH3OCH 3
Bond
Wavenumbers (cm-¹)
Bond
Wavenumbers (cm-¹)
c) Crotonaldehyde, CH3CH=CHCHO
Wavenumbers (cm-¹)
Transcribed Image Text:2. Based on Appendix 1, identify any two (2) significant bonds and the approximate wavenumbers associated with the following compounds. (Write your answer in the given table) a) CH3CH₂OH Bond b) CH3OCH 3 Bond Wavenumbers (cm-¹) Bond Wavenumbers (cm-¹) c) Crotonaldehyde, CH3CH=CHCHO Wavenumbers (cm-¹)
Wavenumber, cm-1
2960-2850(s)
SOME CHARACTERISTIC IR ABSORPTION BANDS
2760-2700, 2860-2800 (w),
(a pair of bands)
3080-3020 (m)
3100-3000 (m)
3333-3267 (s)
1680-1640 (m,w)
2260-2100 (m)
1600, 1500 (w), usually shows
several peaks
1400 - 1090 (s)
1320-1210 (m)
1760 - 1670 (s)
3600-3200 (b)
3400-2500 (b)
3500 - 3300 (m)
1340 - 1020 (m)
2260-2220 (m)
APPENDIX 1
h = 6.63 x 10-34 J.S
c = 3.00 x 108 ms-1
Bond
C-H (sp³) Alkanes
C-H
C-H (sp²) Alkenes
C-H
C-H (sp)
C=C
CEC
C=C
C-O
C-O
O-H
Alcohols, Ethers, Esters
Carboxylic acids
C=O Aldehydes, Ketones, Carboxylic acids,
Esters
O-H
N-H
C-N
Aldehydes
CEN
Functional Group
Aromatic Rings
Alkynes
Alkenes
Alkynes
Aromatic Rings
Intensities: s= strong, m = medium, w = weak, b = broad
Hydrogen-bonded - Alcohols,
Phenols
Carboxylic acids
Amines
Amines
Nitriles
Transcribed Image Text:Wavenumber, cm-1 2960-2850(s) SOME CHARACTERISTIC IR ABSORPTION BANDS 2760-2700, 2860-2800 (w), (a pair of bands) 3080-3020 (m) 3100-3000 (m) 3333-3267 (s) 1680-1640 (m,w) 2260-2100 (m) 1600, 1500 (w), usually shows several peaks 1400 - 1090 (s) 1320-1210 (m) 1760 - 1670 (s) 3600-3200 (b) 3400-2500 (b) 3500 - 3300 (m) 1340 - 1020 (m) 2260-2220 (m) APPENDIX 1 h = 6.63 x 10-34 J.S c = 3.00 x 108 ms-1 Bond C-H (sp³) Alkanes C-H C-H (sp²) Alkenes C-H C-H (sp) C=C CEC C=C C-O C-O O-H Alcohols, Ethers, Esters Carboxylic acids C=O Aldehydes, Ketones, Carboxylic acids, Esters O-H N-H C-N Aldehydes CEN Functional Group Aromatic Rings Alkynes Alkenes Alkynes Aromatic Rings Intensities: s= strong, m = medium, w = weak, b = broad Hydrogen-bonded - Alcohols, Phenols Carboxylic acids Amines Amines Nitriles
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