Explain why or why not each compound of C4H8O2 could or could not be represented on the IR spectrum.
Homework Answers
The peak around 3400 cm-1 confirms the presence of the O-H group. Now there are two possibilities, if it is 3-hydroxybutanal then there should be two peaks in the region of 2750-2850 cm-1 for the fermi resonance of the aldehyde group, but fermi resonance effect is missing. Therefore according to me, the correct answer is 3-hydroxybutan-2-one.
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Explain why or why not each compound of C4H8O2 could or could not be represented on the IR spectrum. 5. (16 points) For...
IV. On each the following IR spectra, circle and indicate the most important stretching signals from...
IV. On each the following IR spectra, circle and indicate the most important stretching signals from the following choices:N-H, O-H, C=N, C=C, C=0, C-O, (3 points each, 6 points total) Top, IR spectrum of Compound 23a: C10H120; Bottom, IR Spectrum of Compound 23b: C16H140 1.025 1.000 m 0.975 0.950 Transmitance 0.925 0.900 0.875 0.850 3750 3500 3250 3000 2750 2500 1750 1500 1250 1000 750 2250 2000 Wavenumbers (cm-1) 1.0 0.8 0.6 Transmitance N 0.2 0.0 4500 4000 3500 2000...
IV. On each the following IR spectra, circle and indicate the most important stretching signals from...
IV. On each the following IR spectra, circle and indicate the most important stretching signals from the following choices:N-H, O-H, C=N, C=C, C=0, C-O, (3 points each, 6 points total) Top, IR spectrum of Compound 23a: C10H120; Bottom, IR Spectrum of Compound 23b: C16H140 1.025 1.000 m 0.975 0.950 Transmitance 0.925 0.900 0.875 0.850 3750 3500 3250 3000 2750 2500 1750 1500 1250 1000 750 2250 2000 Wavenumbers (cm-1) 1.0 0.8 0.6 Transmitance N 0.2 0.0 4500 4000 3500 2000...
ANN 3. Match the compound to its IR Spectra, and assign the important bands in the...
ANN 3. Match the compound to its IR Spectra, and assign the important bands in the IR spectrum for each compound TE Weber pon B) shmere CH3(CH2).CH2H SOURI D) он 4000 3500 3000 2500 2000 1500 Wavebors CH3 Transmitance 1500 2500 3000 3500 2000 W vermbers 4000
organic IV. On each the following IR spectra, circle and indicate the most important stretching signals...
organic
IV. On each the following IR spectra, circle and indicate the most important stretching signals from the following choices N-H, O-H, CEN, CAC, C-0, C-O, (3 points each, 6 points total) Top, IR spectrum of Compound 23a: CH120, Bottom, IR Spectrum of Compound 23: CH10 1.005 1000 0.975 m mom 0.950 Transmitance 6.900 1500 1110 1250 1000 2150 3000 1250 3500 3750 3505 2390 2000 Wavenumbers (om-1) 10 08 " ให้ 04 Transmitance 04 02 2000 1500 1000 00...
Interpret the IR spectrum for benzoin. Draw out each compound on the corresponding spectrum and indicate...
Interpret the IR spectrum for benzoin. Draw out each
compound on the corresponding spectrum and indicate the specific
absorbance (not the ranges from the correlation table) for each
type of bond.Some of the hydrogen-bonding groups display sharper
than normal absorbance. Explain why.
(GMT-07 00) 90 85 80 75 70 65 60 50 1500 1000 2500 2000 4000 3500 Wavenumbers (cm-1)
Does your IR spectrum indicate that the starting material was acetylated ? Briefly explain. Transmittance 0...
Does your IR spectrum indicate that the starting material was
acetylated ? Briefly explain.
Transmittance 0 4000 3500 3000 2500 Wavenumbers (cm-1) 2000 1500 1000
Label NMR spectra Esters: Ethyl acetate PERKIN ELMER 100.00 %T IR Spectrum(Thin Film) 0.00- 4000 3500...
Label NMR spectra
Esters: Ethyl acetate
PERKIN ELMER 100.00 %T IR Spectrum(Thin Film) 0.00- 4000 3500 3000 2500 2000 1500 1000 cm: 588
Interpret the IR spectrum. Assign peaks to the major functional groups present in Compound 3. %Transmittance...
Interpret the IR spectrum. Assign peaks to the major
functional groups present in Compound 3.
%Transmittance 4000 451 3500 3000 2500 Wavenumbers (cm-1) 2000 1704.22 1582.94 1500 1455.74 1401.84 1360.52 1277.77 1199.79 1169,80 1000 1149.01 1090.22 1008 96 1024.98 COMPOUND 3 942.39 919 35 885.89 855.60 780.62 714.49
Assign the peak for both of the IR spectrum below and identify what compound is this...
Assign the peak for both of the IR spectrum below and identify
what compound is this and draw the structure of the compound.
100 90 80 70 W 60 50 % Transmission 40 30 - 923 1677 1285 20 - 702 10 0 4000 3500 3000 2500 2000 1500 1000 Wavenumber (cm) 100 80 m % Transmission 1660 1209 1438 886 757 0 4000 3500 3000 2500 1500 1000 2000 Wavenumber (cm*')
Click in the answer box to display choices Choose the compound that matches the IR spectrum...
Click in the answer box to display choices Choose the compound that matches the IR spectrum shown. 100 50 4000 3500 3000 2500 2000 1500 1000 500 Wavenumber (cm-) A: D: The spectrum belongs to compound (select)
IV. On each the following IR spectra, circle and indicate the most important stretching signals from the following choices:N-H, O-H, C=N, C=C, C=0, C-O, (3 points each, 6 points total) Top, IR spectrum of Compound 23a: C10H120; Bottom, IR Spectrum of Compound 23b: C16H140 1.025 1.000 m 0.975 0.950 Transmitance 0.925 0.900 0.875 0.850 3750 3500 3250 3000 2750 2500 1750 1500 1250 1000 750 2250 2000 Wavenumbers (cm-1) 1.0 0.8 0.6 Transmitance N 0.2 0.0 4500 4000 3500 2000...
IV. On each the following IR spectra, circle and indicate the most important stretching signals from the following choices:N-H, O-H, C=N, C=C, C=0, C-O, (3 points each, 6 points total) Top, IR spectrum of Compound 23a: C10H120; Bottom, IR Spectrum of Compound 23b: C16H140 1.025 1.000 m 0.975 0.950 Transmitance 0.925 0.900 0.875 0.850 3750 3500 3250 3000 2750 2500 1750 1500 1250 1000 750 2250 2000 Wavenumbers (cm-1) 1.0 0.8 0.6 Transmitance N 0.2 0.0 4500 4000 3500 2000...
ANN 3. Match the compound to its IR Spectra, and assign the important bands in the IR spectrum for each compound TE Weber pon B) shmere CH3(CH2).CH2H SOURI D) он 4000 3500 3000 2500 2000 1500 Wavebors CH3 Transmitance 1500 2500 3000 3500 2000 W vermbers 4000
organic
IV. On each the following IR spectra, circle and indicate the most important stretching signals from the following choices N-H, O-H, CEN, CAC, C-0, C-O, (3 points each, 6 points total) Top, IR spectrum of Compound 23a: CH120, Bottom, IR Spectrum of Compound 23: CH10 1.005 1000 0.975 m mom 0.950 Transmitance 6.900 1500 1110 1250 1000 2150 3000 1250 3500 3750 3505 2390 2000 Wavenumbers (om-1) 10 08 " ให้ 04 Transmitance 04 02 2000 1500 1000 00...
Interpret the IR spectrum for benzoin. Draw out each
compound on the corresponding spectrum and indicate the specific
absorbance (not the ranges from the correlation table) for each
type of bond.Some of the hydrogen-bonding groups display sharper
than normal absorbance. Explain why.
(GMT-07 00) 90 85 80 75 70 65 60 50 1500 1000 2500 2000 4000 3500 Wavenumbers (cm-1)
Does your IR spectrum indicate that the starting material was
acetylated ? Briefly explain.
Transmittance 0 4000 3500 3000 2500 Wavenumbers (cm-1) 2000 1500 1000
Label NMR spectra
Esters: Ethyl acetate
PERKIN ELMER 100.00 %T IR Spectrum(Thin Film) 0.00- 4000 3500 3000 2500 2000 1500 1000 cm: 588
Interpret the IR spectrum. Assign peaks to the major
functional groups present in Compound 3.
%Transmittance 4000 451 3500 3000 2500 Wavenumbers (cm-1) 2000 1704.22 1582.94 1500 1455.74 1401.84 1360.52 1277.77 1199.79 1169,80 1000 1149.01 1090.22 1008 96 1024.98 COMPOUND 3 942.39 919 35 885.89 855.60 780.62 714.49
Assign the peak for both of the IR spectrum below and identify
what compound is this and draw the structure of the compound.
100 90 80 70 W 60 50 % Transmission 40 30 - 923 1677 1285 20 - 702 10 0 4000 3500 3000 2500 2000 1500 1000 Wavenumber (cm) 100 80 m % Transmission 1660 1209 1438 886 757 0 4000 3500 3000 2500 1500 1000 2000 Wavenumber (cm*')
Click in the answer box to display choices Choose the compound that matches the IR spectrum shown. 100 50 4000 3500 3000 2500 2000 1500 1000 500 Wavenumber (cm-) A: D: The spectrum belongs to compound (select)
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