A solid unknown has a melting point range of around 115-117 deg C and has a...
A solid unknown has a melting point range of around 115-117 deg C and has a IR spectrum shown below. What is the likely structure/name of the compound?
Homework Answers
The compound shows signal for a carbony group around 1650 cm- along with a broad absorption for carboxylic acid about 3300-2500 cm- . We can see some peak around 1480-1450 cm-, may be correspond to aromatic C=C. Its melting point is 115-117 deg C. It may be benzoic acid whose melting point is around 121-122 deg C (Aldrich).
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A solid unknown has a melting point range of around 115-117 deg
C and has a...
- A student is trying to identify an unknown solid based on its melting point. She...
- A student is trying to identify an unknown solid based on its melting point. She noted that the compound began to melt at 182°C and finished melting at 187°C. Knowing it is possible for there to be impurities in the sample, is this compound more likely to be camphor or hydroquinone. Explain your reasoning. A young chemist has synthesized what he believed to be acetaminophen. He measured the melting point of this newly formed compound to be 163-178°C. If...
what is the structure C NMR data, are Compound 14 is a low-melting solid (melting point...
what is the structure
C NMR data, are Compound 14 is a low-melting solid (melting point 45-49 "C). The Mass, IR, and H NMR spectra, along with given below. Elemental Analysis C, 85.69, H, 5.53; 0,8.78 Wave Number, om LLLLLL 'H NMR Structure: "C Spectral Data: singlet, 187.0 ppm singlet, 137.8 ppm doublet, 132 2 ppm doublet, 130.1 ppm doublet, 128.2 ppm C ole Company
3. The melting point of unknown A was measured to be 110-120°C and unknown B was...
3. The melting point of unknown A was measured to be 110-120°C and unknown B was measured to be 105-109°C. What statement would make the best conclusion about the identity and purity of the product? (4 pts) A. Unknown A range of 110-120°C is the pure substance. Unknown B range of 105-109°C contains impurities. B. Unknown B range of 105-109°C is the pure substance. Unknown A range of 110-120°C contains impurities. C. Both Unknown A and B are pure substances....
The melting point of an unknown solid is determined to be 53°C. What is this temperature...
The melting point of an unknown solid is determined to be 53°C. What is this temperature on the Fahrenheit and Kelvin scales? Temperature Temperature K
what could be the possible structure of this nmr? The unknown compounds has melting point range...
what could be the possible
structure of this nmr? The unknown compounds has melting point
range of 93-96 degree Celsius
#4. Aqueous layer 59-4-1 1 1 /opt/topepin3.6.1/data/jing/rime [rel] NOCOWO 8.1610 8.1481 في نطا 30 1.0000 0.4966 1.0024 Ippm]
When performing a melting point on a solid compound, 2 melting point determinations were made. One...
When performing a melting point on a solid compound, 2 melting point determinations were made. One sample, which was 1 mm in height in the capillary, possessed a melting point of 150-151°C. The other sample was 25 mm in height. What would you expect the approximate melting point to be for this 25 mm sample, if the heating rate for both samples was 2 degrees per minute? (Hint: use algebra to solve the mp range) 4.
Use the following data to answer 2 through 5: Temperature solid starts melting 69.5 C Temperature...
Use the following data to answer 2 through 5: Temperature solid starts melting 69.5 C Temperature solid ends melting 70.0 C 2. The melting point of the unknown solid is ________. 3.The identity of the unknown solid is ________. 4.The range for the previous solid is ________. 5. Based on the range, we can conclude the sample is ________.
The low-resolution mass spectrum of an unknown monosubstituted benzene showed a molecular ion (M+) peak at...
The low-resolution mass spectrum of an unknown monosubstituted benzene showed a molecular ion (M+) peak at m/z 150. Combustion analysis of a sample of this compound indicated that the compound contained C, H, and O only and had an empirical formula of C3H1002. The IR spectrum of the unknown compound is shown below. The 'H NMR spectrum of the unknown compound did not show a peak in the 9.10 ppm range. D 4000 9000 2000 1500 1000 RAVENUGERII What is...
For ethanol, C2H5OH, the heat of fusion at its normal melting point of -115 °C is...
For ethanol, C2H5OH, the heat of fusion at its normal melting point of -115 °C is 5.0 kJ/mol. The entropy change when 1.84 moles of solid C2H5OH melts at -115 °C, 1 atm is J/K.
compound with an IR peak around 1700 em gave a yellow pecipitate with iodoform test. The...
compound with an IR peak around 1700 em gave a yellow pecipitate with iodoform test. The compound was reacted with Tollen's reagent but no silver mirror formed. A probable structure for this compound is 8. Read the table below Boiling Point °C 182-185 Benzylamine 184 Compound Derivatives melting point (C) Benzamide 105 163 Picrate 199 198 Acetamide 60 144 Aniline For an unknown sample, if its boiling point is about 183-184 °C, which derivative test is not suitable to identify...
- A student is trying to identify an unknown solid based on its melting point. She noted that the compound began to melt at 182°C and finished melting at 187°C. Knowing it is possible for there to be impurities in the sample, is this compound more likely to be camphor or hydroquinone. Explain your reasoning. A young chemist has synthesized what he believed to be acetaminophen. He measured the melting point of this newly formed compound to be 163-178°C. If...
what is the structure
C NMR data, are Compound 14 is a low-melting solid (melting point 45-49 "C). The Mass, IR, and H NMR spectra, along with given below. Elemental Analysis C, 85.69, H, 5.53; 0,8.78 Wave Number, om LLLLLL 'H NMR Structure: "C Spectral Data: singlet, 187.0 ppm singlet, 137.8 ppm doublet, 132 2 ppm doublet, 130.1 ppm doublet, 128.2 ppm C ole Company
3. The melting point of unknown A was measured to be 110-120°C and unknown B was measured to be 105-109°C. What statement would make the best conclusion about the identity and purity of the product? (4 pts) A. Unknown A range of 110-120°C is the pure substance. Unknown B range of 105-109°C contains impurities. B. Unknown B range of 105-109°C is the pure substance. Unknown A range of 110-120°C contains impurities. C. Both Unknown A and B are pure substances....
The melting point of an unknown solid is determined to be 53°C. What is this temperature on the Fahrenheit and Kelvin scales? Temperature Temperature K
what could be the possible
structure of this nmr? The unknown compounds has melting point
range of 93-96 degree Celsius
#4. Aqueous layer 59-4-1 1 1 /opt/topepin3.6.1/data/jing/rime [rel] NOCOWO 8.1610 8.1481 في نطا 30 1.0000 0.4966 1.0024 Ippm]
When performing a melting point on a solid compound, 2 melting point determinations were made. One sample, which was 1 mm in height in the capillary, possessed a melting point of 150-151°C. The other sample was 25 mm in height. What would you expect the approximate melting point to be for this 25 mm sample, if the heating rate for both samples was 2 degrees per minute? (Hint: use algebra to solve the mp range) 4.
The low-resolution mass spectrum of an unknown monosubstituted benzene showed a molecular ion (M+) peak at m/z 150. Combustion analysis of a sample of this compound indicated that the compound contained C, H, and O only and had an empirical formula of C3H1002. The IR spectrum of the unknown compound is shown below. The 'H NMR spectrum of the unknown compound did not show a peak in the 9.10 ppm range. D 4000 9000 2000 1500 1000 RAVENUGERII What is...
compound with an IR peak around 1700 em gave a yellow pecipitate with iodoform test. The compound was reacted with Tollen's reagent but no silver mirror formed. A probable structure for this compound is 8. Read the table below Boiling Point °C 182-185 Benzylamine 184 Compound Derivatives melting point (C) Benzamide 105 163 Picrate 199 198 Acetamide 60 144 Aniline For an unknown sample, if its boiling point is about 183-184 °C, which derivative test is not suitable to identify...
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