Homework Answers
Add Answer to:
Draw the correct structure for C7H6O2 by analyzing the spectra
below. Label the spectrum and explain...
Draw the correct structure for C7H6O2 by analyzing the spectra below. Label the spectrum and explain...
Draw the correct structure for C7H6O2 by analyzing the spectra
below. Label the spectrum and explain your answer.
CORRECTION! Formula is C4H6O4
Sample #2 CyHeOy 94 92 90 88 82 76 70 68 4000 3500 3000 2500 1000 2000 1500 500 Wavenumbers (cm-1) 8 8 2868.76 2530.76 1671.92 1408.84 06 20 1175.52 1270.88 1194.56 997.33 885.17 800.78 636.57 577 42 545.36 504.07 431:38 416.49 401.13 Sampe 4.5 4.0 3.5 3.0 2.5 2.0 Ppm 0.53 00'
Draw the correct structure for C8H8 by analyzing the spectra below. Label the spectrum and explain...
Draw the correct structure for C8H8 by analyzing the spectra
below. Label the spectrum and explain your answer.
100 95 90 85 80 75 70 65 60 55 50 45 4000 3500 3000 2500 1500 1000 2000 500 Wavenumbers (cm-1) %Transmittance 2973.42 2940.13 2826.86 1469.79 1386.26 1363.07 1262.57 1020.89 850.92 724.39 459.11 4.5 3.5 3.0 4.0 2.5 2.0 0.5 ppm 1.5 1.0 00 3.04
In West Texas, water is extremely important. The following data represent ph levels in ground water...
In West Texas, water is extremely important. The following data represent ph levels in ground water for a random sample of 102 West Texas wells. A pH less than 7 Is adidic and a pH above 7 is alkaline. Scanning the data, you can see that water in this region tends to be hard (alkaline). Too high a pH means the water is unusable or needs expensive treatment to make it usable.t These data are also available for download at...
In the proton NMR for benzil, there are clearly some impurity peaks below 8 ppm. Although...
In the proton NMR for benzil, there are clearly some impurity
peaks below 8 ppm. Although we cannot assign these for certain, is
it possible that these peaks come from unreacted benzoin? Why or
why not?
8.0 8.3 7.5 8.2 NMR nuclei observed: H Solvent: CDCl3 NMR field strength: 400MHz 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 (ppm) f1 8.1 8.0 7.9 7.8 7.7 7.6 7.5 7.4 7.3 f1 (ppm) 11 10 12 13 14 2.0 1.5...
In West Texas, water is extremely important. The following data represent pH levels in ground water for a random...
In West Texas, water is extremely important. The following data represent pH levels in ground water for a random sample of 102 West Texas wells. A pH less than 7 is acidic and a pH above 7 is alkaline. Scanning the data, you can see that water in this region tends to be hard (alkaline). Too high a pH means the water is unusable or needs expensive treatment to make it usable.t These data are also available for download at...
Questions Using the spectrum attached to this procedure, assign the peaks in the 'H NMR spectrum...
Questions Using the spectrum attached to this procedure, assign the peaks in the 'H NMR spectrum for 3.4-methylenedioxynitrostyrene. Using coupling constants, describe the geometry of the double bond. You should tear out the labeled proton spectrum and turn it in with your notebook pages. Account for the unusual acidity of nitromethane whose pK, is 10. 1) CH3NO2, NaOH 2) HCI, H2O piperonal Mol. Wt.: 150.13 3,4-methylenedioxynitrostyrene Mol. Wt.: 193.16 —3177.4 - 3163.9 -2995.7 -2982.2 -2904.9 2838.0 2836.4 2030.0 2828.3 2801.0...
I am struggling to decipher these spectrums, can you help? unk # R161 7.133 THE HNMR...
I am struggling to decipher these spectrums, can you
help?
unk # R161 7.133 THE HNMR - 1.753 ** 1.702 CH Рpn Expansion of 'HAMR -1.71) 1.420 1.981 1.457 3.4 3.2 3.0 2.3 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.3 1.0 0.0 0.0 PPA 33.85 46.75 Expansion of 'HNMR -7.993 2.2 8.1 8.0 7.9 7.8 7.7 7.6 7.5 7.4 7.3 7.2 ppm 136.610 132.863 -128.353 . 127.862 BC NMR Solvent 38.100 - 28.153 22.255 20 Dom -13.716 % Transmittance...
Use ir and nmr to identify functional groups and ir stretchs, draw out structure and calculate...
Use
ir and nmr to identify functional groups and ir stretchs, draw out
structure and calculate degrees of unsaturation.
Question 9: CH,02 WWW 80 TRANSMITTANCE [%] 60 40 20 4000 3500 3000 1500 1000 2500 2000 WAVENUMBER (cm.) 500 1.014 1.00-1 2014 10 ! Question 9: C10H8O2 7.7 1.014 -7.86 7.6 - 7.50 - 7.58 ppm 7.5 ppm 11 7.47 - 7.44 7.4 e os dos pelos dos do 25 20 733 730 7.3 ECOCE 7.2 3.10
Write down problem number. Provide formula, HDI value, and a complete, chemically correct structure for each...
Write down problem number.
Provide formula, HDI value, and a complete, chemically correct
structure for each problem.
Assign signals in the 1H and 13C spectra to specific atoms,
identify structural units and/or functional groups.
Example:
Problem # 3
Formula: C8H8O2
HDI: 5
1H NMR: p-substituted Ar at 7.27-7.97 ppm, benzylic CH3 group at
2.42 ppm, COOH proton at 12.9 ppm
13C NMR: carbonyl C at 167.8 ppm (ester or acid), benzylic CH3
at 21.40 ppm, 4 remaining signals are Ar...
LABEL THE SPECTRA WITH CORRECT STRUCTURE. THE CHOICES ARE SHOWN BELOW. EXPLAIN WHY YOU CHOOSE THAT....
LABEL THE SPECTRA WITH CORRECT STRUCTURE. THE CHOICES ARE SHOWN
BELOW. EXPLAIN WHY YOU CHOOSE THAT.
3. Label the spectra with the correct structure. The choices are shown below. HN- OH 엥 SAMPLE we mo Be 60 % TRANSMITTANCE 40 22 1ebe 1560 2009 4008 350g 3000 2580 HAVENUMBERS 6BP. 3. SAMPLE ide 80- 60 TRANSMITTANCE 40- an 2C 2580 2008 1562 DDD 4000 3000 350D 600. HAVENUMBERS % TRANSITITTANCE 8 8 । 3. T T T L HAVENUMBERS +...
Draw the correct structure for C7H6O2 by analyzing the spectra
below. Label the spectrum and explain your answer.
CORRECTION! Formula is C4H6O4
Sample #2 CyHeOy 94 92 90 88 82 76 70 68 4000 3500 3000 2500 1000 2000 1500 500 Wavenumbers (cm-1) 8 8 2868.76 2530.76 1671.92 1408.84 06 20 1175.52 1270.88 1194.56 997.33 885.17 800.78 636.57 577 42 545.36 504.07 431:38 416.49 401.13 Sampe 4.5 4.0 3.5 3.0 2.5 2.0 Ppm 0.53 00'
Draw the correct structure for C8H8 by analyzing the spectra
below. Label the spectrum and explain your answer.
100 95 90 85 80 75 70 65 60 55 50 45 4000 3500 3000 2500 1500 1000 2000 500 Wavenumbers (cm-1) %Transmittance 2973.42 2940.13 2826.86 1469.79 1386.26 1363.07 1262.57 1020.89 850.92 724.39 459.11 4.5 3.5 3.0 4.0 2.5 2.0 0.5 ppm 1.5 1.0 00 3.04
In West Texas, water is extremely important. The following data represent ph levels in ground water for a random sample of 102 West Texas wells. A pH less than 7 Is adidic and a pH above 7 is alkaline. Scanning the data, you can see that water in this region tends to be hard (alkaline). Too high a pH means the water is unusable or needs expensive treatment to make it usable.t These data are also available for download at...
In the proton NMR for benzil, there are clearly some impurity
peaks below 8 ppm. Although we cannot assign these for certain, is
it possible that these peaks come from unreacted benzoin? Why or
why not?
8.0 8.3 7.5 8.2 NMR nuclei observed: H Solvent: CDCl3 NMR field strength: 400MHz 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 (ppm) f1 8.1 8.0 7.9 7.8 7.7 7.6 7.5 7.4 7.3 f1 (ppm) 11 10 12 13 14 2.0 1.5...
In West Texas, water is extremely important. The following data represent pH levels in ground water for a random sample of 102 West Texas wells. A pH less than 7 is acidic and a pH above 7 is alkaline. Scanning the data, you can see that water in this region tends to be hard (alkaline). Too high a pH means the water is unusable or needs expensive treatment to make it usable.t These data are also available for download at...
Questions Using the spectrum attached to this procedure, assign the peaks in the 'H NMR spectrum for 3.4-methylenedioxynitrostyrene. Using coupling constants, describe the geometry of the double bond. You should tear out the labeled proton spectrum and turn it in with your notebook pages. Account for the unusual acidity of nitromethane whose pK, is 10. 1) CH3NO2, NaOH 2) HCI, H2O piperonal Mol. Wt.: 150.13 3,4-methylenedioxynitrostyrene Mol. Wt.: 193.16 —3177.4 - 3163.9 -2995.7 -2982.2 -2904.9 2838.0 2836.4 2030.0 2828.3 2801.0...
I am struggling to decipher these spectrums, can you
help?
unk # R161 7.133 THE HNMR - 1.753 ** 1.702 CH Рpn Expansion of 'HAMR -1.71) 1.420 1.981 1.457 3.4 3.2 3.0 2.3 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.3 1.0 0.0 0.0 PPA 33.85 46.75 Expansion of 'HNMR -7.993 2.2 8.1 8.0 7.9 7.8 7.7 7.6 7.5 7.4 7.3 7.2 ppm 136.610 132.863 -128.353 . 127.862 BC NMR Solvent 38.100 - 28.153 22.255 20 Dom -13.716 % Transmittance...
Use
ir and nmr to identify functional groups and ir stretchs, draw out
structure and calculate degrees of unsaturation.
Question 9: CH,02 WWW 80 TRANSMITTANCE [%] 60 40 20 4000 3500 3000 1500 1000 2500 2000 WAVENUMBER (cm.) 500 1.014 1.00-1 2014 10 ! Question 9: C10H8O2 7.7 1.014 -7.86 7.6 - 7.50 - 7.58 ppm 7.5 ppm 11 7.47 - 7.44 7.4 e os dos pelos dos do 25 20 733 730 7.3 ECOCE 7.2 3.10
Write down problem number.
Provide formula, HDI value, and a complete, chemically correct
structure for each problem.
Assign signals in the 1H and 13C spectra to specific atoms,
identify structural units and/or functional groups.
Example:
Problem # 3
Formula: C8H8O2
HDI: 5
1H NMR: p-substituted Ar at 7.27-7.97 ppm, benzylic CH3 group at
2.42 ppm, COOH proton at 12.9 ppm
13C NMR: carbonyl C at 167.8 ppm (ester or acid), benzylic CH3
at 21.40 ppm, 4 remaining signals are Ar...
LABEL THE SPECTRA WITH CORRECT STRUCTURE. THE CHOICES ARE SHOWN
BELOW. EXPLAIN WHY YOU CHOOSE THAT.
3. Label the spectra with the correct structure. The choices are shown below. HN- OH 엥 SAMPLE we mo Be 60 % TRANSMITTANCE 40 22 1ebe 1560 2009 4008 350g 3000 2580 HAVENUMBERS 6BP. 3. SAMPLE ide 80- 60 TRANSMITTANCE 40- an 2C 2580 2008 1562 DDD 4000 3000 350D 600. HAVENUMBERS % TRANSITITTANCE 8 8 । 3. T T T L HAVENUMBERS +...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago