Homework Answers
A) The IR spectrum shows overtones from 1700-2000, also aromatic C=C stretching frequency at 1620 confirms presence of aromatic ring. Therefore it belongs to e. Xylene
B) IR spectrum shows a carbonyl frequency at 1720 corresponding to C=O stretching frequency. Therefore it belongs to f. Butanone
C) The IR spectrum shows a Brad peak from 2500-3500 corresponding to carboxylic acid O-H stretch confirms presence of acid. Therefore it belongs to c. Propanoic acid
D) IR spectrum shows alcoholic O-H stretching frequency, therefore it belongs to a. Isopropanol
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Absorbance/% 100+ 4000 3000 2500 1000 500 2000 1500 Wavenumbers /cm-1 Absorbance/ 100+ 4000 3000 2500...
What is the compound identity? %Transmittance 4000 3500 3000 1500 1000 2500 2000 Wavenumbers (cm-1) Date:...
What is the compound identity?
%Transmittance 4000 3500 3000 1500 1000 2500 2000 Wavenumbers (cm-1) Date: Unknown IR UNK 304 (rerun) Scans: 1 Resolution: Unknown
Compound X ransmitance 4000 3000 2000 1000 500 1500 Wavenumbers Look at the given IR spectra...
Compound X ransmitance 4000 3000 2000 1000 500 1500 Wavenumbers Look at the given IR spectra for compound X. Determine what kinds of bonds/functional group are present and select present/absent. Alcohol / Secondary Amine (O-H/N-H) Carboxylic Acid (O-H) Primary Amine (-NH2) Alkyne (C-H) Alkene (=C-H) Alkane (C-H) Aldehyde (C-H) Triple bond (CC or CN) Carbonyl (C=0) Alkene (C=C) Alkane (C-C) Look at the given compounds. Determine if each could have given the above spectrum. It's possible that more than one...
Denzalde hyde 75 70 50 45 Benzaldenyde 25 1500 1000 2000 3500 3000 4000 Wavenumbers (cm-1)
identify 3 structural features of benzaldehyde from 3 different
peaks
Denzalde hyde 75 70 50 45 Benzaldenyde 25 1500 1000 2000 3500 3000 4000 Wavenumbers (cm-1)
Denzalde hyde 75 70 50 45 Benzaldenyde 25 1500 1000 2000 3500 3000 4000 Wavenumbers (cm-1)
which groups are here? Absorbance 0.2 4000 3500 3000 2965 943018.65 2922.55 2872.49 2731.91 2500 Wavenumbers...
which groups are here?
Absorbance 0.2 4000 3500 3000 2965 943018.65 2922.55 2872.49 2731.91 2500 Wavenumbers (cm-1) 2000 1592.12 1606.53 1614.10 1465 65 1495.92 1516.63 1500 1453.47 1376.89 1038,88 1052.53 1000 769.32 691,53 697.74 4743.52
analyze the IR spectra. Indicate product formed 1% 3500 4000 3000 2500 2000 1500 1000 450...
analyze the IR spectra. Indicate product formed
1% 3500 4000 3000 2500 2000 1500 1000 450 cm-1
0 78 74 1000 2000 1500 4000 Wavenumbers (cm-1)
mark the peaks in this IR
0 78 74 1000 2000 1500 4000 Wavenumbers (cm-1)
0 78 74 1000 2000 1500 4000 Wavenumbers (cm-1)
Compound Z % Transmittance 4000 3000 2000 1000 500 1500 Wavenumbers Look at the given IR...
Compound Z % Transmittance 4000 3000 2000 1000 500 1500 Wavenumbers Look at the given IR spectra for compound Z. Determine what kinds of bonds/functional group are present and select present/absent. Alcohol / Secondary Amine (O-H/N-H) [Select] Carboxylic Acid (O-H) [Select] A Primary Amine (-NH2) (Select] A Alkyne (C-H) [ Select ] Alkene (=C-H) [Select] Alkane (C-H) [ Select] Aldehyde (C-H) [Select] Triple bond (CC or CN) [Select] Carbonyl (C=C) [ Select] Alkene (C=C) [ Select ] Alkane (C-C) [...
Label IR spectra 4000 3500 3235.54 ב 3000 2850.11 2590.03 2599,43 2500 Wavenumbers (em-11 2000 164997...
Label IR spectra
4000 3500 3235.54 ב 3000 2850.11 2590.03 2599,43 2500 Wavenumbers (em-11 2000 164997 1500 ולכן ל 6b 1283 34 1208.14 1000
Label IR spectra %Transmittance 4000 Methyl 3500 Salicylate 3191.67 3000 3154.07 3069.46 3025.59 2953.52 2500 Wavenumbers...
Label IR spectra
%Transmittance 4000 Methyl 3500 Salicylate 3191.67 3000 3154.07 3069.46 3025.59 2953.52 2500 Wavenumbers (cm-1) 2000 1675.04 1615 50 1577.90 1500 1487.02 1440.02 1327.21 1000 121441
please interpret the peaks 90 88- 86- 84- 82 1500 1000 2000 2500 3000 3500 Wavenumbers...
please interpret the peaks
90 88- 86- 84- 82 1500 1000 2000 2500 3000 3500 Wavenumbers (cm-1) % Transmittance 8 8 8 3 8 8d 8 2913.98 22222 LL6 ignore gnore 1688.75 1618.74 1448.26 1379.17 1264.92- 1219.32 8901
90 88- 86- 84- 82 1500 1000 2000 2500 3000 3500 Wavenumbers (cm-1) % Transmittance 8 8 8 3 8 8d 8 2913.98 22222 LL6 ignore gnore 1688.75 1618.74 1448.26 1379.17 1264.92- 1219.32 8901
What is the compound identity?
%Transmittance 4000 3500 3000 1500 1000 2500 2000 Wavenumbers (cm-1) Date: Unknown IR UNK 304 (rerun) Scans: 1 Resolution: Unknown
Compound X ransmitance 4000 3000 2000 1000 500 1500 Wavenumbers Look at the given IR spectra for compound X. Determine what kinds of bonds/functional group are present and select present/absent. Alcohol / Secondary Amine (O-H/N-H) Carboxylic Acid (O-H) Primary Amine (-NH2) Alkyne (C-H) Alkene (=C-H) Alkane (C-H) Aldehyde (C-H) Triple bond (CC or CN) Carbonyl (C=0) Alkene (C=C) Alkane (C-C) Look at the given compounds. Determine if each could have given the above spectrum. It's possible that more than one...
identify 3 structural features of benzaldehyde from 3 different
peaks
Denzalde hyde 75 70 50 45 Benzaldenyde 25 1500 1000 2000 3500 3000 4000 Wavenumbers (cm-1)
Denzalde hyde 75 70 50 45 Benzaldenyde 25 1500 1000 2000 3500 3000 4000 Wavenumbers (cm-1)
which groups are here?
Absorbance 0.2 4000 3500 3000 2965 943018.65 2922.55 2872.49 2731.91 2500 Wavenumbers (cm-1) 2000 1592.12 1606.53 1614.10 1465 65 1495.92 1516.63 1500 1453.47 1376.89 1038,88 1052.53 1000 769.32 691,53 697.74 4743.52
analyze the IR spectra. Indicate product formed
1% 3500 4000 3000 2500 2000 1500 1000 450 cm-1
mark the peaks in this IR
0 78 74 1000 2000 1500 4000 Wavenumbers (cm-1)
0 78 74 1000 2000 1500 4000 Wavenumbers (cm-1)
Compound Z % Transmittance 4000 3000 2000 1000 500 1500 Wavenumbers Look at the given IR spectra for compound Z. Determine what kinds of bonds/functional group are present and select present/absent. Alcohol / Secondary Amine (O-H/N-H) [Select] Carboxylic Acid (O-H) [Select] A Primary Amine (-NH2) (Select] A Alkyne (C-H) [ Select ] Alkene (=C-H) [Select] Alkane (C-H) [ Select] Aldehyde (C-H) [Select] Triple bond (CC or CN) [Select] Carbonyl (C=C) [ Select] Alkene (C=C) [ Select ] Alkane (C-C) [...
Label IR spectra
4000 3500 3235.54 ב 3000 2850.11 2590.03 2599,43 2500 Wavenumbers (em-11 2000 164997 1500 ולכן ל 6b 1283 34 1208.14 1000
Label IR spectra
%Transmittance 4000 Methyl 3500 Salicylate 3191.67 3000 3154.07 3069.46 3025.59 2953.52 2500 Wavenumbers (cm-1) 2000 1675.04 1615 50 1577.90 1500 1487.02 1440.02 1327.21 1000 121441
please interpret the peaks
90 88- 86- 84- 82 1500 1000 2000 2500 3000 3500 Wavenumbers (cm-1) % Transmittance 8 8 8 3 8 8d 8 2913.98 22222 LL6 ignore gnore 1688.75 1618.74 1448.26 1379.17 1264.92- 1219.32 8901
90 88- 86- 84- 82 1500 1000 2000 2500 3000 3500 Wavenumbers (cm-1) % Transmittance 8 8 8 3 8 8d 8 2913.98 22222 LL6 ignore gnore 1688.75 1618.74 1448.26 1379.17 1264.92- 1219.32 8901
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