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Indicate the differences between the spectra of 1-methyl-benzimidazole and benzimidazole.
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- describe the NMR spectra pattern of benzoic acidHow will you distinguish p-anisaldehyde from 3- nitro benzaldehyde using 1H-NMR. Discuss the major peaks for each compoundGiven the CNMR and IR spectrum determine which of the compound listed is the unknown compound from which the data was taken. And provide an explanation as to why it fits for the CNMR and IR spectrum. ethyl methanoate, acetone, diethylamine sec-butylamine isobutyraldehyde methanol hexane isobutylamine butylamine ethyl acetate ethanol methyl propionate 2-butanone isopropanol tert-butyl alcohol tert-butyl formate methyl acrylate isopropyl acetate methyl isobutyrate 3-methylbutanal isopropyl methyl ketone 1-propanol allyl alcohol heptane sec-butanol (2-butanol) methanoic acid pentanal dipropylamine toluene 3-pentanol butyl alcohol Solubility Results: Water: Soluble Chloroform: Immiscible 5% NaOH: Immiscible 5% HCl: Immiscible 5% NaHCO3: Immiscible DMSO: Miscible
- Is this NMR for acetophenone or 2-methylbenzaldehyde?Interpret the NMR spectra and identify these compounds: choices: 4-Chloroacetanilide Diphenylmethanol Ethyl 4-hydroxybenzoate Phenacetin 2-Chloroacetanilide include integration number and multiplicityThe difference between UV spectroscopy of Benzaldehyde and UV of Benzonitrile
- The NMR spectrum of 3-nitroaniline was taken in deuterated dimethylsulfoxide (DMSO), not CDCl3. Why? a) The residual CHCl3 peak would get in the way of the aromatic peaks in the product.b) 3-Nitroaniline is not soluble in CDCl3.c) DMSO allows visualization of the peaks for the NH2 group.d) 3-Nitrobenzamide is not soluble in CDCl3.Interpret the NMR spectra and identify these compounds: choices: 4-Chloroacetanilide Diphenylmethanol Ethyl 4-hydroxybenzoate Phenacetin 2-Chloroacetanilide Include integration and multiplicityand B, spectroscopically. For each signal, indicate which compound would give the signal where in which type List two signals you could use to distinguish between these two compo of spectroscopy (IR, ¹H NMR, or 13C NMR). acetonitrile Which compound acetonitrile B = acetic acid Location of signal type of spectroscopy
- Based on the IR spectroscopy, what is this compound? The options include acetamide, benzoic acid, benzophenone, p-nitroaniline, p-aminobenzoic acid, and triphenyl methanol.Explain why the carbonyl carbon of an aldehyde or ketone absorbs farther downfield than the carbonyl carbon of an ester in a 13C NMR spectrum.In the 1H NMR spectra of 2-bromopropane (CH3)2CHBr and 1-bromopropane CH3CH2CH2Br, how many signals do you expect to see?
