Homework Answers
Add Answer to:
4. TLC is a common method used to monitor reactions for completion. Consider the reaction below...
4. TLC is a common method used to monitor reactions for completion. Consider the reaction below and draw the expect...
4. TLC is a common method used to monitor reactions for completion. Consider the reaction below and draw the expected TLC plate for prior to the reaction, during the reaction, and after the reaction has completed. Only consider species A (1-hexene) and B (1-hexanol) on the TLC plates that you draw. 1. BH3-THF 2. NaOH, H2O2 HO B A
I need help with my pre and post lab questions. The three compounds below were spotted...
I need help with my pre and post lab questions.
The three compounds below were spotted on a TLC plate and developed to give the TLC plate shown. Which compound corresponds to which spot? Calculate the Rf value for spot B in the TLC plate shown above. When using polarity to determine the relative rates at which organic compounds travel up the TLC plate, we are considering compounds of similar molecular weight. It should also be noted that Rf values...
A student monitored the reaction progress of the reduction of 4-Nitrobenzaldehyde to 4-Nitrobenzyl alcohol using TLC....
A student monitored the reaction progress of the reduction of
4-Nitrobenzaldehyde to 4-Nitrobenzyl alcohol using TLC. 30% ethyl
acetate in petroleum ether was used as the elution solvent. TLC
plates available in the laboratory were coated with the common
absorbent silica gel (SiO2.xH2O) which
contains polar hydroxyl (OH-) groups.
c. The crude product moves slower
than the starting material with the mobile
phase in the TLC plate. Briefly
explain a possible reason for the
observation based on the chemical
structures...
Below is the H NMR spectra for the molecule styrene. Consider if a hydroboration reaction was...
Below is the H NMR spectra for the molecule styrene.
Consider if a hydroboration reaction was preformed on styrene.
How would the H NMR of the expected product change in comparison to
styrene? Circle which peaks from the styrene spectra would
disappear and not be present in the NMR of the product.
Draw the expected product. Describe the splitting pattern of
each new proton signal that would appear in the NMR of the
product.
2) Below is the 'H NMR...
2. Consider the reactions 1 and 2 shown below. Indicate how the reaction rate for each of the reactions will change...
2. Consider the reactions 1 and 2 shown below. Indicate how the reaction rate for each of the reactions will change your options are: increase, decrease, does NOT change) when the following modifications to the reactions and conditions are introduced: reaction 1 reaction 2 Br CH30 Na CH3OH CH OH as solvent CH3OH is also solvent A. The reaction temperature for both reactions is increased. B. The concentration of the reagent shown above the arrow is increased. C. The concentration...
Draw the structure of the final product(s) of this series of reactions 1pt ernces 1 pt...
Draw the structure of the final product(s) of this series of reactions 1pt ernces 1 pt 1. Br 1 pt 2.3 equivalents of NaNH 3. mild acid 1 pt 4. BH 5. H202/ NaOH 1 pt 1 pt 1 pt Use the wedge/hash bond tools to indicate stereochemistry where it exists Include H atoms at chiral centers only If a group is achiral, do not use wedged or hashed bonds on it Draw organic species only. Do not include lone...
Please draw the mechanism with the compounds listed below 4 9-4: Transesterification For this assignment, the...
Please draw the mechanism with the compounds listed below 4
9-4: Transesterification For this assignment, the target compound that you should synthesize is ethyl propionate. This is a carboxylic acid derivative transformation. Keep in mind the mechanism and the potential of reaction reversibility. Examine the product and determine the bond that will be formed. Synthesis Procedures 1. Start Virtual ChemLab and select Transesterification from the list of assignments on the whiteboard. After entering the synthesis laboratory, use the available reagents...
What would be the mechanism VCL 2-4: Alkene Hydration - 2 Alkene Hydration me product, but...
What would be the mechanism
VCL 2-4: Alkene Hydration - 2 Alkene Hydration me product, but not with the For this assignment, the target compound that you should synthesize is 2-hexanol. Again, electrophilie alkene addition reaction Examine the product to determine the location of the functionality. Keep in mind that different startine materials may give the same product, but same selectivity. Remember to form the more substituted carbocation intermediate Synthesis Procedures 1. Start Virtual Chemlab and select Alkene Hydration -...
please help me with Organic Chemistry/Alkenes problems. Thank you! Directions: Place your answers to the following...
please help me with Organic Chemistry/Alkenes problems. Thank you!
Directions: Place your answers to the following questions in the spaces provided. 1. A common problem in the acid-catalyzed hydration of alkenes is the formation of an ether byproduct. Show the formation of the ether byproduct in relation to the reaction below by providing a curved-arrow mechanism for its formation. (2 pts) H30+ Н,0 OH Ans. 2. Which is the correct sequence of steps necessary to complete the following reaction? он...
Only need help with 5,6,7 and mechanism FTIR and NMR Spectra After completing a reaction and...
Only need help with 5,6,7
and mechanism
FTIR and NMR Spectra After completing a reaction and working up the products, it is still necessary to confirm that the correct product was formed. The most common tools used for this analysis are Fourier Transform Infrared (FTIR) and Nuclear Magnetic Resonance (NMR) spectroscopy. In the virtual laboratory, 'H and C NMR spectra are available. Details on interpreting FTIR and NMR spectra are found in your textbook. Your instructor may or may not...
4. TLC is a common method used to monitor reactions for completion. Consider the reaction below and draw the expected TLC plate for prior to the reaction, during the reaction, and after the reaction has completed. Only consider species A (1-hexene) and B (1-hexanol) on the TLC plates that you draw. 1. BH3-THF 2. NaOH, H2O2 HO B A
I need help with my pre and post lab questions.
The three compounds below were spotted on a TLC plate and developed to give the TLC plate shown. Which compound corresponds to which spot? Calculate the Rf value for spot B in the TLC plate shown above. When using polarity to determine the relative rates at which organic compounds travel up the TLC plate, we are considering compounds of similar molecular weight. It should also be noted that Rf values...
A student monitored the reaction progress of the reduction of
4-Nitrobenzaldehyde to 4-Nitrobenzyl alcohol using TLC. 30% ethyl
acetate in petroleum ether was used as the elution solvent. TLC
plates available in the laboratory were coated with the common
absorbent silica gel (SiO2.xH2O) which
contains polar hydroxyl (OH-) groups.
c. The crude product moves slower
than the starting material with the mobile
phase in the TLC plate. Briefly
explain a possible reason for the
observation based on the chemical
structures...
Below is the H NMR spectra for the molecule styrene.
Consider if a hydroboration reaction was preformed on styrene.
How would the H NMR of the expected product change in comparison to
styrene? Circle which peaks from the styrene spectra would
disappear and not be present in the NMR of the product.
Draw the expected product. Describe the splitting pattern of
each new proton signal that would appear in the NMR of the
product.
2) Below is the 'H NMR...
2. Consider the reactions 1 and 2 shown below. Indicate how the reaction rate for each of the reactions will change your options are: increase, decrease, does NOT change) when the following modifications to the reactions and conditions are introduced: reaction 1 reaction 2 Br CH30 Na CH3OH CH OH as solvent CH3OH is also solvent A. The reaction temperature for both reactions is increased. B. The concentration of the reagent shown above the arrow is increased. C. The concentration...
Draw the structure of the final product(s) of this series of reactions 1pt ernces 1 pt 1. Br 1 pt 2.3 equivalents of NaNH 3. mild acid 1 pt 4. BH 5. H202/ NaOH 1 pt 1 pt 1 pt Use the wedge/hash bond tools to indicate stereochemistry where it exists Include H atoms at chiral centers only If a group is achiral, do not use wedged or hashed bonds on it Draw organic species only. Do not include lone...
Please draw the mechanism with the compounds listed below 4
9-4: Transesterification For this assignment, the target compound that you should synthesize is ethyl propionate. This is a carboxylic acid derivative transformation. Keep in mind the mechanism and the potential of reaction reversibility. Examine the product and determine the bond that will be formed. Synthesis Procedures 1. Start Virtual ChemLab and select Transesterification from the list of assignments on the whiteboard. After entering the synthesis laboratory, use the available reagents...
What would be the mechanism
VCL 2-4: Alkene Hydration - 2 Alkene Hydration me product, but not with the For this assignment, the target compound that you should synthesize is 2-hexanol. Again, electrophilie alkene addition reaction Examine the product to determine the location of the functionality. Keep in mind that different startine materials may give the same product, but same selectivity. Remember to form the more substituted carbocation intermediate Synthesis Procedures 1. Start Virtual Chemlab and select Alkene Hydration -...
please help me with Organic Chemistry/Alkenes problems. Thank you!
Directions: Place your answers to the following questions in the spaces provided. 1. A common problem in the acid-catalyzed hydration of alkenes is the formation of an ether byproduct. Show the formation of the ether byproduct in relation to the reaction below by providing a curved-arrow mechanism for its formation. (2 pts) H30+ Н,0 OH Ans. 2. Which is the correct sequence of steps necessary to complete the following reaction? он...
Only need help with 5,6,7
and mechanism
FTIR and NMR Spectra After completing a reaction and working up the products, it is still necessary to confirm that the correct product was formed. The most common tools used for this analysis are Fourier Transform Infrared (FTIR) and Nuclear Magnetic Resonance (NMR) spectroscopy. In the virtual laboratory, 'H and C NMR spectra are available. Details on interpreting FTIR and NMR spectra are found in your textbook. Your instructor may or may not...
Most questions answered within 3 hours.
-
Rice Products in Bangladesh
Business behavior is derived in large part from the basic cultural
environment...
asked 25 minutes ago -
The following base sequence is found for a mRNA fragment from
wild-type E. coli: 5'- UAUCAGUAGAUAAUGUAACC-3'...
asked 49 minutes ago -
For this exercise, round all regression parameters to three
decimal places.
One of the two tables...
asked 1 hour ago -
What is the 5% level of significance for mean = 3.60, standard
deviation = 0.94, and...
asked 1 hour ago -
Prior to beginning work on this discussion, please read the
article by Hayley Peterson, 15 Companies...
asked 1 hour ago -
Which pair of aqueous solutions, when mixed, will form a
precipitate?
A) NaNO3 and AgC2H3O2
B)...
asked 1 hour ago -
1-Write an algorithm to get two numbers from the user (as
inputs) and calculate the sum...
asked 5 hours ago -
Define white-collar crime. What is the difference between
offender and offense-based definitions of white-collar crime? What...
asked 5 hours ago -
Consider a reaction which is 1st order with respect to A and 1st
order with respect...
asked 6 hours ago -
c++
The length of the hypotenuse of a right-angled triangle is the
square root of the...
asked 6 hours ago -
When a metal rod is heated, not only its resistance but also its
length and cross‐sectional...
asked 6 hours ago -
write a c++ program that computes the L^1 - Norm of a given
vector (L^1 norm...
asked 6 hours ago