A solution of ethanol has been contaminated with benzene—a technique employed to make ethanol unfit to drink. Benzene has a molar absorptivity of 230 M-1 cm-1 at 260 nm in ethanol, and ethanol shows no absorbance at 260 nm. How can the concentration of benzene in the solution be determined?

Q: Illustrated below is a portion of the ¹3C{¹H} NMR of an organic compound which corresponds to the…

A: In the given question we have to explain the appearance of the given spectrum.The NMR spectroscopy…

Q: with the formula C7H120 shows the following spectroscopic data. Deduce the structure of the entify…

A: The given molecular formula is: C7H12OThe unsaturation or Double bond equivalence is given by:This…

Q: Dye Y has a concentration of 5.75 × 10-6 Molar and is placed into a 0.50 cm cuvette. Its molar…

A: Concentration = 5.75 × 10-6 M  length of cuvette = 0.50 cm  Molar absorptivity = 6.75 × 10 cm-1 M-1…

Q: How could IR spectroscopy be used to distinguish between the following compounds?

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Q: Which structure is consistent with this IR spectrum? 0.8 0.6 0.4 0.2 0.0 3000 mmmm my 2000…

A: IR spectra provides the information of functional groups of unknown compound based on the…

Q: The mass spectrum of 2,2-dimethylpropane shows only a very weak molecular ion peak at m/z = 72.…

A: Please find the attachment.

Q: 0.14 0.12 0.1 0.08 0.06 0.04 0.02 1000 1500 2000 2500 3000 3500 4000 Wavenumber (cm) Absorbance…

A: Determination of a compound with just one spectrum is not adequate. However, the absorption spectrum…

Q: How would you distingush between the molecules using 1H NMR spectra? Give TWO key differences.

A: We will closely observe the two compounds and find out the proton present in a different…

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A: Dear student I have given answer to your question in the image format.

Q: A compound with molecular formula C₂H8O3 exhibits the following IR, ¹H NMR and 13C NMR spectra.…

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Q: A compound with molecularformula C,H,,0 gives the following IR spectrum. 100 1650 1720 4000 36bo…

A: Given is IR spectra.

Q: Predict the structure of a compound based on this 13C NMR spectra. The chemical formula of this…

A: Only 4 signal is obtained in which two have almost same delta value at 130 so double bond present

Q: Identify the functional group in the molecule and provide two possible structures.

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Q: How many peaks would each compound show in their 13C NMR spectrum?  a) eucalyptol  b) linalool

A: Each unique carbon gives one peak in 13C-NMR. So, the number of peaks in 13C-NMR equals to the…

Q: C,H,OCH, CH,CH,COOH CH, COCH, CH,&oCH,CH, CH,COCH,CH, CH,CH,C,H, CH,CH,OCH,CH, CH, CHCH, CH,CH,OH…

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Q: What structure is consistent with these spectra? ¹H NMR Spectrum 1200 MHz, CDC), solution) 100 10 80…

A: 1HNMR spectroscopy is useful to determine types of hydrogens, signals, splitting etc and hence we…

Q: An unknown compound described by the spectra below is a liquid (b.p. 161 C) with a measured…

A: The mass spectrum, IR-spectra and the 1H-NMR spectra of a unknown organic compound is given. The…

Q: Avobenzone is used in sunscreens. A UV spectrum of a 3.0 mL sample of avobenzone (310.4 g/mol) in a…

A: The volume of avobenzene sample = 3.0 mLLength of the cell, l = 1.0 cmMolar exctinction coefficient…

Q: Sketch the form of the 19F NMR spectrum and the 10B NMR spectrum of 10BF4−.

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Q: If 3-Bromo-1-phenyl-1-propene shows a complex NMR spectrum in which the vinylic proton at C2 is…

A: Signal of C2 proton splits into doublet due to coupling with C1 proton this is because C1 carbon has…

Q: The 1H NMR spectrum of chloromethane recorded on a 300 Hz NMR spectrometer consists of signals at…

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Q: Br 6 b iv 200 a 150 4 PPM 100 PPM PPM 2 50 0 0 (b) Choose one (1) difference in chemical shift…

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Q: The intensities of peaks at 69 m/z, 70 m/z, and 71 m/z are 1.2, 31.2, and 1.7, respectively. How…

A: A question based on Mass spectrum, which is to be accomplished.

Q: An unknown compound has the following spectroscopic properties: Mass Spectrometry: m/z 102 (very…

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Q: IR spectrum of unknown alcohol 0.25 0.20 0 15 0.10- 0.05 0.00 0.05- -0.10- 0.15 -0.20 Absorbance…

A: We have given IR spectra of 2- Butanol  The IR spectra tell you what types of vibrational modes the…