Homework Answers
Question1) Spectra compare of IR : take the spectra of the sample and compare it with reference sample . Match both the fingerprint rigion so with this mathod we can compare the spectra
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Page6 017 O Fo for Though Predict how IR should change, compare spectra, explain what you...
DMS ROOR use 'HNMR and IR to distinguish between 2. Explain how you would use what...
DMS ROOR use 'HNMR and IR to distinguish between 2. Explain how you would use what difference(s) would you expect in (a) the IR uish between each of the and (b) what difference() would you expect in the NMR oints). DO NOT INCLUDE INFO THAT IS following pairs : In other words, what difference(s) Spectra of the two compounds and (0) what differen spectra of the two compounds. (15 points). DO NOT COMMON FOR BOTH OSCH IR for A IR...
Compare your IR spectra (starting material vs. product(s)). Provide a brief summary of what you see...
Compare your IR spectra (starting material vs. product(s)).
Provide a brief summary of what you see in terms of functional
groups for both. Do your results indicate that your dehydration
reaction was successful? Identify the major peaks in the
spectra.
0 500 009 700 800 006 1100 1200 1300 1400 1500 1600 1700 1800 0061 2000 27 2400 2600 2800 3000 3200 3400 3600 800 -+:+- LIULUI " -* " " + + + . . ii.ii + + +...
How can you use IR spectroscopy and UV spectroscopy to distinguish between o-xylene and p-xylene? Please explain how you...
How can you use IR spectroscopy and UV spectroscopy to distinguish between o-xylene and p-xylene? Please explain how you get the IR values.
With the values of the possible products. 4) Discuss the IR spectra of your starting materials....
With the values of the possible products. 4) Discuss the IR spectra of your starting materials. Based on your spectra determine which unknown was the aldehyde and which was the ketone. You should discuss the key peaks you used to make these assignments. If your IR spectra were helpful in identifying which ketone or aldehyde you had, discuss this as well. For additional info, see the IR modes handout on the class web site. 5) Assign the peaks in the...
please help! thank you! O ACIDS AND BASES Making qualitative estimates of pH change Each row...
please help! thank you!
O ACIDS AND BASES Making qualitative estimates of pH change Each row of the table below describes an aqueous solution at 25 °C. The second column of the table shows the initial components of the solution. • Use the checkboxes in the third column to explain the type of the initial solution. The fourth column describes a change in the solution. • Use the fifth column to predict how the change in the solution will change...
Please analyze the IR and NMR spectra. How pure it is? What impurities can be observed?...
Please analyze the IR and NMR spectra. How pure it is? What
impurities can be observed? Please label all major signals. The
product is N,N-diethyl-m-toluamide. The product is obtained by the
following reactions
Solvent is Et2O. Extracted with NaOH and then HCl and then
H2O. Dried and then evaporated. To further purify the product,
hexane was added to perform column chromatography.
Evaporated.
Clearer image for the IR image:
CH3 CH3 SOCI2 + SO2 O=0 ОН CH3 CH3 -- + excess...
11 Explain how IR spectroscopy could be used to following two compounds, by comparing: distinguish between...
11 Explain how IR spectroscopy could be used to following two compounds, by comparing: distinguish between the The C-O Stretch The C-O Bend The Aromatic Region C-H Stretch The two molecules will produce an identical IR spectrum al b) c) d) e) 12 What must take place in order for infrared absorption to occur? a) Electrons must be promoted from their ground state orbital to a higher energy orbital. b) Bending of covalent bonds causing the nuclei of the atoms...
NMR IR CAN YOU PLEASE ANSWER AS SOON AS POSSIBLE THANK YOU PLEASE EXPLAIN IT IN DETAIL THANK YOU Experimental Data Only report the IR absorptions that provide diagnosis...
NMR
IR
CAN YOU PLEASE ANSWER AS SOON AS POSSIBLE THANK
YOU
PLEASE EXPLAIN IT IN DETAIL THANK YOU
Experimental Data Only report the IR absorptions that provide diagnosis for the major functional groups. Copies of your spectra will be included in your lab report with this information written on the spectra. However, the information should also be included in the body of the report in a text format similar to the example given below IR cm1: 1735 (C-o); MS:...
please try to answer all, thank you! Next, consider how capacitors that are wired in series,...
please try to answer all, thank you!
Next, consider how capacitors that are wired in series, as shown in Figure 24.6 behave. 675 Arrangement 24.5.2. Activity: Capacitance for a Series Arrangement a. Use direct physical reasoning to predict the equivalent capacitance of a pair of capacitors wired in series. Explain your reasoning. Hint: IF you connect two capacitors in series, what will happen to the charges along the conductor between them? What will the effective separa- tion of the "plates"...
1) At 298 K, an equilibrium mixture contains P H2=0.958 atm, P I2= 0.877 atm and...
1) At 298 K, an equilibrium
mixture contains P H2=0.958 atm, P I2= 0.877 atm and P HI=0.020
atm. Please try and answer all!
You must show all your work to receive credit. Watch sig figs! Consider the reaction: 1) At 298 K, an equilibrium mixture contains P H2-0.958 atm, P ½=0.877 atm, and P HI-0.020 atm. Calculate the value of the equilibrium constant Kp? a) (o, o2) 0.938x o.87? b) And what is the value of the equilibrium constant...
DMS ROOR use 'HNMR and IR to distinguish between 2. Explain how you would use what difference(s) would you expect in (a) the IR uish between each of the and (b) what difference() would you expect in the NMR oints). DO NOT INCLUDE INFO THAT IS following pairs : In other words, what difference(s) Spectra of the two compounds and (0) what differen spectra of the two compounds. (15 points). DO NOT COMMON FOR BOTH OSCH IR for A IR...
Compare your IR spectra (starting material vs. product(s)).
Provide a brief summary of what you see in terms of functional
groups for both. Do your results indicate that your dehydration
reaction was successful? Identify the major peaks in the
spectra.
0 500 009 700 800 006 1100 1200 1300 1400 1500 1600 1700 1800 0061 2000 27 2400 2600 2800 3000 3200 3400 3600 800 -+:+- LIULUI " -* " " + + + . . ii.ii + + +...
With the values of the possible products. 4) Discuss the IR spectra of your starting materials. Based on your spectra determine which unknown was the aldehyde and which was the ketone. You should discuss the key peaks you used to make these assignments. If your IR spectra were helpful in identifying which ketone or aldehyde you had, discuss this as well. For additional info, see the IR modes handout on the class web site. 5) Assign the peaks in the...
please help! thank you!
O ACIDS AND BASES Making qualitative estimates of pH change Each row of the table below describes an aqueous solution at 25 °C. The second column of the table shows the initial components of the solution. • Use the checkboxes in the third column to explain the type of the initial solution. The fourth column describes a change in the solution. • Use the fifth column to predict how the change in the solution will change...
Please analyze the IR and NMR spectra. How pure it is? What
impurities can be observed? Please label all major signals. The
product is N,N-diethyl-m-toluamide. The product is obtained by the
following reactions
Solvent is Et2O. Extracted with NaOH and then HCl and then
H2O. Dried and then evaporated. To further purify the product,
hexane was added to perform column chromatography.
Evaporated.
Clearer image for the IR image:
CH3 CH3 SOCI2 + SO2 O=0 ОН CH3 CH3 -- + excess...
11 Explain how IR spectroscopy could be used to following two compounds, by comparing: distinguish between the The C-O Stretch The C-O Bend The Aromatic Region C-H Stretch The two molecules will produce an identical IR spectrum al b) c) d) e) 12 What must take place in order for infrared absorption to occur? a) Electrons must be promoted from their ground state orbital to a higher energy orbital. b) Bending of covalent bonds causing the nuclei of the atoms...
NMR
IR
CAN YOU PLEASE ANSWER AS SOON AS POSSIBLE THANK
YOU
PLEASE EXPLAIN IT IN DETAIL THANK YOU
Experimental Data Only report the IR absorptions that provide diagnosis for the major functional groups. Copies of your spectra will be included in your lab report with this information written on the spectra. However, the information should also be included in the body of the report in a text format similar to the example given below IR cm1: 1735 (C-o); MS:...
please try to answer all, thank you!
Next, consider how capacitors that are wired in series, as shown in Figure 24.6 behave. 675 Arrangement 24.5.2. Activity: Capacitance for a Series Arrangement a. Use direct physical reasoning to predict the equivalent capacitance of a pair of capacitors wired in series. Explain your reasoning. Hint: IF you connect two capacitors in series, what will happen to the charges along the conductor between them? What will the effective separa- tion of the "plates"...
1) At 298 K, an equilibrium
mixture contains P H2=0.958 atm, P I2= 0.877 atm and P HI=0.020
atm. Please try and answer all!
You must show all your work to receive credit. Watch sig figs! Consider the reaction: 1) At 298 K, an equilibrium mixture contains P H2-0.958 atm, P ½=0.877 atm, and P HI-0.020 atm. Calculate the value of the equilibrium constant Kp? a) (o, o2) 0.938x o.87? b) And what is the value of the equilibrium constant...
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