(a)
Interpretation:
The explanation for
Concept introduction:
A method by which structure of compound is determined by the interaction between matter and
(b)
Interpretation:
The structures of desired product and actual product are to be drawn.
Concept introduction:
A method by which structure of compound is determined by the interaction between matter and electromagnetic radiation is called spectroscopy. A spectroscopic technique in which infrared radiation is used for structural study is called IR spectroscopy.
(c)
Interpretation:
The explanation for expected MS base peak at
Concept introduction:
A method by which structure of compound is determined by the interaction between matter and electromagnetic radiation is called spectroscopy. A spectroscopic technique in which electric ionizers are used for structural study is called mass spectroscopy.
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Organic Chemistry (9th Edition)
- Which of the following statements are true concerning product distribution in the halogenation of an alkane? I: Bromination yields a statistical distribution of products based on the number of each type of hydrogen atom II: Chlorination yields a statistical distribution of products based on the number of each type of hydrogen atom. III: Bromination does not yield a statistical distribution of products based on the number of each type of hydrogen atom. IV: Chlorination does not yield a statistical distribution of products based on the number of each type of hydrogen atom. O Statement I O Statement II O Statements III and IV O Statement IV O Statements I and II O Statement IIIarrow_forwardIdentify the C-H out-of-plane bending vibrations in the infrared spectrum of 4- methylcyclohexene. What structural information can be obtained from these bands?arrow_forwardWhich of the following molecules do you expect would be useful in quenching benzophenone photoreduction? Explain.Oxygen (S1 = 22 kcal/mol)9,10-Diphenylanthracene (T1 = 42 kcal/mol)trans-1,3-Pentadiene (T1 = 59 kcal/mol)Naphthalene (T1 = 61 kcal/mol)Biphenyl (T1 = 66 kcal/mol)Toluene (T1 = 83 kcal/mol)Benzene (T1 = 84 kcal/mol)arrow_forward
- (a) Predict the values of m>z and the structures of the most abundant fragments you would observe in the mass spectrumof di-n-propyl ether.(b) Give logical fragmentations to account for the following ions observed in the mass spectrum of 2-methoxypentane:102, 87, 71, 59, 31.arrow_forwardWhen 1-bromobutane is treated with sodium acetate(CH3CO2Na), the major product for the reaction is an ester (CH3CO2CH2CH2CH2CH3). Explain how mass spectrometry and IR spectroscopy could be used to prove that the reaction has occurred and you no longer have the starting material.arrow_forwardI. Butyramide (C4H9NO) 100 `NH2 80 20 10 20 30 40 50 60 70 80 90 m/z Identify the structure and provide the mechanism that give rise to the peak at m/z 59. Relative Intensity 우arrow_forward
- 9-What is the structure of the compound that gives the following infrared spectrum? a- Alcohol b- aldehyde c- Ketone d-Alkene e- Carboxylic acid TRANSMETTANCE HIT-NO-1322 SCORE= [ BUTYRIC ACID C4H₂O₂ 4100 3000 ] SDBS-NO=1227 2000 MAVENUMBERIE IR-NIDA-01956 : LIQUID FILM M/M 1500 1000 500arrow_forward5- In a laboratory a student is intending to carry out a dehydration reaction of 1-methylcyclohexanol leading to the formation of 1-methylcyclohexene. After the end of the process, how will this student quantitatively determine, through infrared spectroscopy, that the reaction for the formation of the product occurred satisfactorily?arrow_forwardThe mass spectrum of 2,3-dimethylpentane [(CH3)2CHCH(CH3)CH2CH3]shows fragments at m/z = 85 and 71. Propose possible structures for theions that give rise to these peaks.arrow_forward
- How would you be able to use IR to tell whether the following reaction proceeded? OH 1) 2 CH3Li 2) H3O+ A new peak will appear at 1700 cm-¹. New peaks will appear between 2900-3000 cm-¹. The large peak at 3300 cm ¹ will disappear. The large peak at 3000 cm³¹ will disappear.arrow_forwardWhich of the following molecules matches the given data? HDI = 5 IR (cm-1 ): 1724 (strong), 1604 (weak) UV-Vis: 283 nm ( benzene = 255 nm)arrow_forwardQ/true or false 7- Two bands of NH₂ appear in the infrared spectrum, one of which belongs to symmetric stretching and the other to non-symmetric 8-The aromatic ring proton appears at a higher chemical displacement than the aldehyde proton due to the azotropic effect 9- The acetone shows the transition* in visible and ultraviolet spectroscopyarrow_forward
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