Question 4: a.) If you had an incomplete reaction and some cyclohexanol distilled over with your...
Question 4:
a.) If you had an incomplete reaction and some cyclohexanol distilled over with your product, how could that be determined from your IR spectrum? If your product had not been dried thoroughly, what would be seen in your IR spectrum?
b.) Suppose that from IR analysis you knew that you had either unreacted cyclohexanol OR water in your product. How might you go about determining which it is?
Homework Answers
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Question 4:
a.) If you had an incomplete reaction and some cyclohexanol
distilled over with your...
hi, please help me with number 7. thank you EXPERIMENT SEVEN SODIUM BOROHYDRIDE REDUCTION OF ACETOPHENONE...
hi, please help me with number 7. thank you
EXPERIMENT SEVEN SODIUM BOROHYDRIDE REDUCTION OF ACETOPHENONE HOCH, DISCUSSION The reduction of an aldehyde or ketone with sodium borohydride is straight forward and usually affords a high yield of the alcohol. The usual procedure (and the one employed in this experiment) involves dissolving the borohydride in 95% ethanol and adding the carbonyl compound to this solution. To ensure complete reaction, an excess of sodium borohydride is used. The reaction between sodium...
4) sketch what a developed and resolved TLC plate of a mixture of benzil, benzoin and...
4) sketch what a developed and resolved TLC plate of a mixture of benzil, benzoin and hydrobenzoin might look like. Discuss the relative Rf values on your sketched plate 5) In the reduction of benzil with sodium borohydride, 3 compounds are possible: meso-hydrobenzoin, racemic-hydrobenzoin and racemic-benzoin (resulting from incomplete reduction of benzil). Discuss how you determined (or will go about determining) which of these products was produced. Discuss evidence from melting points, TLC and IR spectra.
the value that is (check your discussion forum for your value) is 37.1 nmol. ~0.0371umol. 4....
the value that is (check your discussion forum for your value) is
37.1 nmol.
~0.0371umol.
4. After primers have been designed and ordered, they are received in very small quantities as a dry solid and need to be resuspended in highly purified water. A volume of highly purified water is added to the dried primer to create the 10uM working solution. How many ul of highly purified water needs to be added to check your discussion forum for your value)...
Suppose you had some 0o C water in a freezer with a COP of 6.2 that...
Suppose you had some 0o C water in a freezer with a COP of 6.2 that is receiving 1.25 kW of power from the wall. How much mass of water could this thing freeze in an hour?
In the synthesis of dimethylmaleate, answer the following question: How would you propose to characterize product...
In the synthesis of dimethylmaleate, answer the following
question:
How would you propose to characterize product of this reaction?
For example: What differences in IR/NMR spectra would you see
between starting material (maleic anhydride) and obtained
product?
SYNTHESIS OF DIMETHYLMALEATE A Chem Ed TESTED DEMONSTRATION Rewritten from: Oliver Grummill, THIS JOURNAL, 18, 447 (1941) by F. B. Dutton Checked by: Vance Hamilton, East Lansing High School, Michigan and then once more with water. It is dried over Drierite or anhydrous...
4. Analyze the IR spectrum of your product, filling in the table below. You should utilize your c...
If you could help
explain the chart above, that would be awesome.
4. Analyze the IR spectrum of your product, filling in the table below. You should utilize your course textbook (pp. 764-766), if you need assistance. Please note that the frequency given below should be exact (one number), not a range. Use the frequency of the center of the band at its strongest point. Then, on the spectrum itself, mark the characteristic bands at their strongest point with a...
Working on the questions at the end of this lab report (see above). I need help answering questio...
Working on the questions at the end of this lab report
(see above). I need help answering questions 2, 3, and 4 completely
and thoroughly. Thank you!
s, until the I hexano 1 clean disti CYCLOHEXENE from CYCLOHEXANOL be dehydrated with solfuric acid to yield cyclohexene and waterf Add a 0°C (record ct and cal H,SO + H20 ainer. s in purification of any crude product are (a) the preliminary separation of the product from the reaction mixture by distillation...
2. You angered Anonymous and they deleted some of your accounting records. You remember a few...
2. You angered Anonymous and they deleted some of your accounting records. You remember a few things though: overhead was $5,000 underapplied, direct materials were twice the direct labor Based on what is left, can you replace the numbers to determine the direct materials? Goods in Process Finished Goods Beginnin Beginnin 50,000 9 40.000 DM COGM DL COGS 50.000 FOH Ending 45,000 COGM Ending 50,000 a. Overhead 30,000 20,000 100002000 b. 30,000 c. 10,000 d. We are Legion. We do...
You are given a light brown solid sample with the information that it is an impure...
You are given a light brown solid sample with the information that it is an impure sample of a phenol – you are tasked with its purification. You ask for information about the suspected impurities, but it seems no one really knows. So you ask for an IR spectra of the impure sample. Upon scrutinizing the IR spectrum carefully, you find that there is a small, but significant, signal at about 1700 cm-1, a small broad peak at about 3000...
After the concert discussed in Problem 2-3 is over and you and your friend are traveling...
After the concert discussed in Problem 2-3 is over and you and your friend are traveling home, you discuss how each of you might otherwise have used the four hours devoted to attending the concert. The four hours could have been used to study, to watch a sporting event on TV, or to get some extra sleep. Your friend decides that if she had not spent four hours attending the concert, she would have chosen to study, and you reply...
hi, please help me with number 7. thank you
EXPERIMENT SEVEN SODIUM BOROHYDRIDE REDUCTION OF ACETOPHENONE HOCH, DISCUSSION The reduction of an aldehyde or ketone with sodium borohydride is straight forward and usually affords a high yield of the alcohol. The usual procedure (and the one employed in this experiment) involves dissolving the borohydride in 95% ethanol and adding the carbonyl compound to this solution. To ensure complete reaction, an excess of sodium borohydride is used. The reaction between sodium...
the value that is (check your discussion forum for your value) is
37.1 nmol.
~0.0371umol.
4. After primers have been designed and ordered, they are received in very small quantities as a dry solid and need to be resuspended in highly purified water. A volume of highly purified water is added to the dried primer to create the 10uM working solution. How many ul of highly purified water needs to be added to check your discussion forum for your value)...
In the synthesis of dimethylmaleate, answer the following
question:
How would you propose to characterize product of this reaction?
For example: What differences in IR/NMR spectra would you see
between starting material (maleic anhydride) and obtained
product?
SYNTHESIS OF DIMETHYLMALEATE A Chem Ed TESTED DEMONSTRATION Rewritten from: Oliver Grummill, THIS JOURNAL, 18, 447 (1941) by F. B. Dutton Checked by: Vance Hamilton, East Lansing High School, Michigan and then once more with water. It is dried over Drierite or anhydrous...
If you could help
explain the chart above, that would be awesome.
4. Analyze the IR spectrum of your product, filling in the table below. You should utilize your course textbook (pp. 764-766), if you need assistance. Please note that the frequency given below should be exact (one number), not a range. Use the frequency of the center of the band at its strongest point. Then, on the spectrum itself, mark the characteristic bands at their strongest point with a...
Working on the questions at the end of this lab report
(see above). I need help answering questions 2, 3, and 4 completely
and thoroughly. Thank you!
s, until the I hexano 1 clean disti CYCLOHEXENE from CYCLOHEXANOL be dehydrated with solfuric acid to yield cyclohexene and waterf Add a 0°C (record ct and cal H,SO + H20 ainer. s in purification of any crude product are (a) the preliminary separation of the product from the reaction mixture by distillation...
2. You angered Anonymous and they deleted some of your accounting records. You remember a few things though: overhead was $5,000 underapplied, direct materials were twice the direct labor Based on what is left, can you replace the numbers to determine the direct materials? Goods in Process Finished Goods Beginnin Beginnin 50,000 9 40.000 DM COGM DL COGS 50.000 FOH Ending 45,000 COGM Ending 50,000 a. Overhead 30,000 20,000 100002000 b. 30,000 c. 10,000 d. We are Legion. We do...
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