Homework Answers
Hb has 2 non equivalent neighbouring protons, Ha and Hc. The J for Hbc is 15 Hz and J for Hab is 6 Hz. Hb will be split into a doublet by Hc. This doublet will again be split into a doublet by Ha. So the final split pattern will be doublet of a doublet.
When a doublet signal is observed, the height of each split peak is equal. So the doublet of a doublet will give a split with 4 peaks of equal height.
On case of Hc, first split will be doublet due to Hb. This
doublet will be further split by 3 Hd protons. So ideally the split
will be triplet of a doublet. Some of the peaks of this split will
overlap. So, a clean triplet of a doublet may 
not be visible.
Add Answer to:
6. Use a splitting tree to predict the shape and relative heights of the alkene HB...
Draw the splitting tree for complex splitting for proton H, below. (10 points) Jab (Hz) 12...
Draw the splitting tree for complex splitting for proton H, below. (10 points) Jab (Hz) 12 Ha Hc Jbc (Hz) 6 Hb
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...
2. Consider the protons labeled H., H., H., of the compound shown below. Each of these...
2. Consider the protons labeled H., H., H., of the compound shown below. Each of these protons are chemically different and are split by at least one other type of proton. coupling constants are shown below. HA HOHC C= "Hc JAB = 15.1 Hz JBC = 6.4 Hz Draw the splitting tree for each proton, H., Ho, and H. 3. Propose a structure for the following compounds piven the spectra and molecula formula. Briefly describe how each spectrum supports your...
I have #3 answered and the information given on the yellow sheet. How do know if Zaitsev's rule i...
I have #3 answered and the information given on the yellow
sheet. How do know if Zaitsev's rule is obeyed?
also 4a and 4b?
ab parther Zotsev average GC retention time 2.147 average GC retention time 2.2 H-NMR assignment key HA Hc HD HE HH HB 13C-NMR assignment key 10 2 7 3 5 6 by GC G.12:1 El: Ratio 2-methyl-2-butene: 2-methyl-1-butene by 'H-NMR 1:01:1 by GC .4: 1 E2: Ratio 2-methyl-2-butene: 2-methyl-1-butene by H-NMR 1.31:1 3) Showing all work,...
1. Interpreting the Table 1. For the following exercise, reference Figure 13.8 in your textbook or...
1. Interpreting the Table 1. For the following exercise, reference Figure 13.8 in your textbook or e-book, and watch the video for that figure in the e-book, For each labelled proton, indicate the ppm range you would expect to find it in for an NMR spectrum. Don't over-think it, just use the chart at this point (Note: In many cases, especially in biochemistry, there will be many complicating factors - here we are just looking at the simple model). CH...
In this experiment we will synthesize dibenzalacetone form benzaldehyde and acetone, taking advantage of the acidity...
In this experiment we will synthesize dibenzalacetone form benzaldehyde and acetone, taking advantage of the acidity of the hydrogen atoms located on the a carbons in acetone. There are a possibility of three products, the trans/trans, the trans/cis, and the cis/cis. Only one is isolated. 1) Draw all three products that could form in this reaction. 2) How will we determine which products have been formed? One way will be to check the melting points of the products. The other...
I have #3 answered and the information given on the yellow sheet. How do know if...
I have #3 answered and the information given on the yellow
sheet. How do know if Zaitsev's rule is obeyed?
also 4a and 4b?
ab parther Zotsev average GC retention time 2.147 average GC retention time 2.2 H-NMR assignment key HA Hc HD HE HH HB 13C-NMR assignment key 10 2 7 3 5 6 by GC G.12:1 El: Ratio 2-methyl-2-butene: 2-methyl-1-butene by 'H-NMR 1:01:1 by GC .4: 1 E2: Ratio 2-methyl-2-butene: 2-methyl-1-butene by H-NMR 1.31:1 3) Showing all work,...
Draw the splitting tree for complex splitting for proton H, below. (10 points) Jab (Hz) 12 Ha Hc Jbc (Hz) 6 Hb
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...
II. Number of Signals 2. Predict the number of unique protons that would generate peaks in an NMR spectrum. Look at Figure 13.6 and example problem 13.2 for guidance. Then for each of these unique proton signals, predict the ppm range where you would find it and the integration value or signal area. Look at figure 13.7 in your textbook. Finally, determine the splitting pattern (multiplicity) of the signal. This is predicted using the n+1 rule. Watch the video for...
2. Consider the protons labeled H., H., H., of the compound shown below. Each of these protons are chemically different and are split by at least one other type of proton. coupling constants are shown below. HA HOHC C= "Hc JAB = 15.1 Hz JBC = 6.4 Hz Draw the splitting tree for each proton, H., Ho, and H. 3. Propose a structure for the following compounds piven the spectra and molecula formula. Briefly describe how each spectrum supports your...
I have #3 answered and the information given on the yellow
sheet. How do know if Zaitsev's rule is obeyed?
also 4a and 4b?
ab parther Zotsev average GC retention time 2.147 average GC retention time 2.2 H-NMR assignment key HA Hc HD HE HH HB 13C-NMR assignment key 10 2 7 3 5 6 by GC G.12:1 El: Ratio 2-methyl-2-butene: 2-methyl-1-butene by 'H-NMR 1:01:1 by GC .4: 1 E2: Ratio 2-methyl-2-butene: 2-methyl-1-butene by H-NMR 1.31:1 3) Showing all work,...
1. Interpreting the Table 1. For the following exercise, reference Figure 13.8 in your textbook or e-book, and watch the video for that figure in the e-book, For each labelled proton, indicate the ppm range you would expect to find it in for an NMR spectrum. Don't over-think it, just use the chart at this point (Note: In many cases, especially in biochemistry, there will be many complicating factors - here we are just looking at the simple model). CH...
In this experiment we will synthesize dibenzalacetone form benzaldehyde and acetone, taking advantage of the acidity of the hydrogen atoms located on the a carbons in acetone. There are a possibility of three products, the trans/trans, the trans/cis, and the cis/cis. Only one is isolated. 1) Draw all three products that could form in this reaction. 2) How will we determine which products have been formed? One way will be to check the melting points of the products. The other...
I have #3 answered and the information given on the yellow
sheet. How do know if Zaitsev's rule is obeyed?
also 4a and 4b?
ab parther Zotsev average GC retention time 2.147 average GC retention time 2.2 H-NMR assignment key HA Hc HD HE HH HB 13C-NMR assignment key 10 2 7 3 5 6 by GC G.12:1 El: Ratio 2-methyl-2-butene: 2-methyl-1-butene by 'H-NMR 1:01:1 by GC .4: 1 E2: Ratio 2-methyl-2-butene: 2-methyl-1-butene by H-NMR 1.31:1 3) Showing all work,...
Most questions answered within 3 hours.
-
The denaturation of proteins can be described by the
equilibrium
F⇌U
where F and U represent...
asked 1 hour ago -
Please answer what the maximum and minimum force is, and the
angle on the ion is...
asked 1 hour ago -
implement a program that reads a number of rows and a symbol.
The program will draw...
asked 1 hour ago -
Assume that when adults with smartphones are randomly selected,
45% use them in meetings or classes....
asked 1 hour ago -
Determine the number of formula units of
Na2SO4 and moles of oxygen contained in 8.11
moles...
asked 1 hour ago -
Explain in steps on the following code
What would be the output when executed
using System;...
asked 1 hour ago -
Given the information in the table, which of the following
statements is CORRECT?
Stock A
Stock...
asked 1 hour ago -
Write MARIE assembly language programs that do the following:
Write a program that inputs an integer...
asked 1 hour ago -
Explain an understanding of services and protocols.
Explain the job of DNS.
Explain the three email...
asked 1 hour ago -
(As soon as possible) Balance each of the following equations
according to the half-reaction method:
H2O2(aq)...
asked 2 hours ago -
A thin rod with a mass of 3.5kg and a length L=1.5 m is oriented
horizontally....
asked 2 hours ago -
Inheritance pattern in BRCA 1
Describe the inheritance pattern of BRCA 1 Is it recessive or...
asked 2 hours ago