In the IR of acetylsalicylic acid what is the important stretching vibration that indicates reaction has occurred?
In the IR of acetylsalicylic acid what is the important stretching vibration that indicates reaction has occurred?
Homework Answers
Acetyl salicylic acid is obtained from reaction of salicylic acid with acetic anhydride
The reaction can be written as
Based on the structure we can make a difference in between Ir of aspirin and salicylic acid and anhydride as
1) A strong O-H stretch in the region of roughly 3520 cm^-1
which must not be present in the product aspirin
2. C-O stretch
Now the C-O peak value will also differ from 1300-1200 cm-1 and
1140-1400 cm-1 in salicylic acid to the peak in near 1300-1000 cm-1
and 1200-1170 cm-1 in aspirin
3. C=O stretch
There will be two peak for C=O group one typically of carboxylic acid and one of ester.
Add Answer to:
In the IR of acetylsalicylic acid what is the important stretching vibration that indicates reaction has occurred?
Find the IR spectra for acetylsalicylic acid. Identify the molecular feature and wavelenghth for each major...
Find the IR spectra for acetylsalicylic acid. Identify the molecular feature and wavelenghth for each major structural peak on the IR.
What is the approximate wavenumber in cm-1 of the fundamental absorption due to the stretching vibration...
What is the approximate wavenumber in cm-1 of the fundamental absorption due to the stretching vibration of a C≡N group? Assume the force constant for a triple bond to be about 1.53×103 N/m.
1. On each the following IR spectra, circle and indicate the most important stretching signal from...
1. On each the following IR spectra, circle and indicate the most important stretching signal from the following choices:N-H, O-H, CEN, CEO, C-O, (2 points each, 4 points total) Top, IR spectrum of Compound A: C3H120; Bottom, IR Spectrum of Compound B: C10H140 100 Unsaturation Index = 돈 4000 1500 1000 RAVENUMBER 500 100 Unsaturation Index = 0 4000 9000 2008 1500 HAVENUMBERI- 1000 SDO
Integrated Problems #12 Common aspirin is acetylsalicylic acid, which has the structure shown below and a...
Integrated Problems #12 Common aspirin is acetylsalicylic acid, which has the structure shown below and a pKa of 3.5. The acidic hydrogen is indicated with the star. H 30: ö-H ö-C-C-H :0: H 1) What is the shape and hybridization around the carbon 1, carbon 2. oxygen 3. 2) What is the bond angle at 1, 2, 3? 3) What types of intermolecular interactions is this molecule capable? 4) Is acetylsalicylic acid a strong or weak acid? 5) Write a...
On each the following IR spectra, circle and indicate the most important stretching signal from the...
On each the following IR spectra, circle and indicate the most important stretching signal from the following choices:N-H, O-H, CEN, C=0, C-O, - เDD mo mm " 4000 3000 so E00 1500 แ000 HAVENUMERI- LOO (ใน am D 4500 Isoa แ000 Sbo 5000 HAVENUMBERI-
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, CEN, CHC, C-O, C-O,(3 points each, 6 points total) Top, IR spectrum of Compound 23a: CH1z0; Bottom, IR Spectrum of Compound 23: CH10 LO Lood wn Transmitance 0.00 3750 1500 100 2750 2500 1750 1500 0 2250 2000 Wavenumbers com-1) 10 08 00 Transmitance 1500 4500 1500 1500 1000 3000 2500 Wave numbers (cm-1)
In this experiment, acetylsalicylic acid is the only species that will hydrolyze and consume some of...
In this experiment, acetylsalicylic acid is the only species that will hydrolyze and consume some of the added base solution. The purpose of the back titration is to determine how much acetylsalicylic acid is present in the sample. If the back titration showed that none of the added base is consumed in the reaction, what does that indicate about the acetylsalicyclic acid?
In the mechanism for formation of acetylsalicylic acid via reaction of salicylic acid with acetic anhydride,...
In the mechanism for formation of acetylsalicylic acid via reaction of salicylic acid with acetic anhydride, phosphoric acid acts as a catalyst by O cleaving an acetyl group from acetic anhydride via protonation of the bridging oxygen O neutralizing the hydroxide ion side product protonating the carbonyl oxygen in the acetic anhydride protonating the phenolic oxygen of salicylic acid Question 10 (3 points) What would be the predicted major product from the thermodynamically controlled dehydration of the following material OH
3. The following compound has a Molecular Formula of C6H1002 and has two strong stretching vibration peaks in its FTIR spectrum at 1725 and 1200 cm1 giving rise to a specific functional group. What i...
3. The following compound has a Molecular Formula of C6H1002 and has two strong stretching vibration peaks in its FTIR spectrum at 1725 and 1200 cm1 giving rise to a specific functional group. What is this molecule (pay attention to values and stereochemistry)? 15 Hz 8 6 5 0 7.0 6.9 5.9 5.8 1.9
3. The following compound has a Molecular Formula of C6H1002 and has two strong stretching vibration peaks in its FTIR spectrum at 1725 and 1200 cm1...
1.0.980 g of acetylsalicylic acid was obtained from 1.00 g of salicylic acid by reaction with...
1.0.980 g of acetylsalicylic acid was obtained from 1.00 g of salicylic acid by reaction with excess acetic anhydride. Calculate the percent yield of acetylsalicylic acid. 2. Two esters with the empirical formula C3H602 may be prepared. Write structural formulas for these esters and name them 3. How would you prepare the two esters in question 2? Draw a reaction for each. 1. Explain why you would or would not expect to observe a color change if FeClj were to...
1. On each the following IR spectra, circle and indicate the most important stretching signal from the following choices:N-H, O-H, CEN, CEO, C-O, (2 points each, 4 points total) Top, IR spectrum of Compound A: C3H120; Bottom, IR Spectrum of Compound B: C10H140 100 Unsaturation Index = 돈 4000 1500 1000 RAVENUMBER 500 100 Unsaturation Index = 0 4000 9000 2008 1500 HAVENUMBERI- 1000 SDO
Integrated Problems #12 Common aspirin is acetylsalicylic acid, which has the structure shown below and a pKa of 3.5. The acidic hydrogen is indicated with the star. H 30: ö-H ö-C-C-H :0: H 1) What is the shape and hybridization around the carbon 1, carbon 2. oxygen 3. 2) What is the bond angle at 1, 2, 3? 3) What types of intermolecular interactions is this molecule capable? 4) Is acetylsalicylic acid a strong or weak acid? 5) Write a...
On each the following IR spectra, circle and indicate the most important stretching signal from the following choices:N-H, O-H, CEN, C=0, C-O, - เDD mo mm " 4000 3000 so E00 1500 แ000 HAVENUMERI- LOO (ใน am D 4500 Isoa แ000 Sbo 5000 HAVENUMBERI-
IV. On each the following IR spectra, circle and indicate the most important stretching signals from the following choices:N-H, O-H, CEN, CHC, C-O, C-O,(3 points each, 6 points total) Top, IR spectrum of Compound 23a: CH1z0; Bottom, IR Spectrum of Compound 23: CH10 LO Lood wn Transmitance 0.00 3750 1500 100 2750 2500 1750 1500 0 2250 2000 Wavenumbers com-1) 10 08 00 Transmitance 1500 4500 1500 1500 1000 3000 2500 Wave numbers (cm-1)
In the mechanism for formation of acetylsalicylic acid via reaction of salicylic acid with acetic anhydride, phosphoric acid acts as a catalyst by O cleaving an acetyl group from acetic anhydride via protonation of the bridging oxygen O neutralizing the hydroxide ion side product protonating the carbonyl oxygen in the acetic anhydride protonating the phenolic oxygen of salicylic acid Question 10 (3 points) What would be the predicted major product from the thermodynamically controlled dehydration of the following material OH
3. The following compound has a Molecular Formula of C6H1002 and has two strong stretching vibration peaks in its FTIR spectrum at 1725 and 1200 cm1 giving rise to a specific functional group. What is this molecule (pay attention to values and stereochemistry)? 15 Hz 8 6 5 0 7.0 6.9 5.9 5.8 1.9
3. The following compound has a Molecular Formula of C6H1002 and has two strong stretching vibration peaks in its FTIR spectrum at 1725 and 1200 cm1...
1.0.980 g of acetylsalicylic acid was obtained from 1.00 g of salicylic acid by reaction with excess acetic anhydride. Calculate the percent yield of acetylsalicylic acid. 2. Two esters with the empirical formula C3H602 may be prepared. Write structural formulas for these esters and name them 3. How would you prepare the two esters in question 2? Draw a reaction for each. 1. Explain why you would or would not expect to observe a color change if FeClj were to...
Most questions answered within 3 hours.
-
An unknown substance has a mass of 16.7 g. The temperature of
the substance increases by...
asked 4 minutes ago -
A toy cannon uses a spring to project a 5.21-g soft rubber ball.
The spring is...
asked 4 minutes ago -
what is balanced chemical equation including
states of matter of Nal + Na2CO3?
asked 3 minutes ago -
An archer shoots an arrow at a bottle. The arrow flys at 34m/s.
There is a...
asked 12 minutes ago -
Multiple choice data structures questions about stacks.
Here is an INCORRECT pseudocode for the algorithm which...
asked 18 minutes ago -
Osmotic forces related to protein concentration differences are
referred to as ________ forces.
asked 22 minutes ago -
Questions:(to
be answered within the video)
Write a C++ program
with the following specifications:
1.
Create...
asked 33 minutes ago -
A 7.55 g sample of an aqueous solution of
hydrochloric acid contains an unknown amount of...
asked 25 minutes ago -
Why would the following user group need accounting information
related to a business? Support your answers...
asked 28 minutes ago -
4. How much work is it to lift a 25 kg sack of cement vertically
4.3...
asked 28 minutes ago -
Write the mechanism for the reaction involving [emim][Br] and
lithium bis(trifluoromethylsulfonyl)imide.
asked 50 minutes ago -
The half life of a specific Tc-99m is 6 hours. How much of an
192 mg...
asked 57 minutes ago