30- 25- 20- 15- 10- 3500 3000 2500 2000 1500 1000 Wavenumber (cm-1) 747 816 884 -1057 1122 -1338 -1486 -1573 2369 -3054

Q: Identify the diastereomer of the molecule shown below: CI I O OH H OH HO CI H 0 HO CI 六 O HO O HO OH…

A: The parent molecule:So, the molecule is (2R,3S)-2-chloro-3-hydroxybutanoic acid. There are two…

Q: xsH20 - A CH2=CH-SIMECI2 heating xsH2O HSİMECI2 B H2SO4

A: A and B formed by hydrolysis of Si-Cl bond in presence of excess water. Then the A and B condensed…

Q: Q45: How many stereocentres are present in the molecule? Bri.. H CI -CBr H

A: Stereocentres are the count of the chiral centres and the stereocentres without chiral atom.

Q: Match the oil to its 13C spectrum and explain why? Pear oil: Peach oil: Orange oil:

A: Inorder to identify the spectrum and match it to the different oils given, we have to identify the…

Q: Which letter identifies the N-terminal of this structure? Ö B NH₂ NH NH₂ HO NH A B с D None of…

A: N terminal  is the terminal which has free amine or -NH2 group in the structure located at the end…

Q: a) which bonds are present in carboxylic acids but not alkanes? b) identify which signals belong to…

A: Answer - IR spectra of 3- methylbutanoic  acid - 1)  Answer -The carboxylic acid has both O-H bond…

Q: Consider the following spectrum. What kind of amine is the compound measured in this IR?

A: Consider the following spectrum. What kind of amine is the compound measured in this IR.,

Q: 石蜡糊法 LOD 1000 20 1000 波数/cm 国 3110 29 171 LP 1661 27 1396 17 13EE LO 1262 12LE 60 J070 6a 097 77 D12…

A: The Given IR spectra belongs to 3- Nitrophthalic acid.

Q: Identify heterotopic atoms or groups in the following structures. Indicate whether the group is…

A: Heterotopic : After replacing one atom / group , if the molecule become chiral then it is…

Q: Which of the following will give a positive 2,4-DNP test? me H3C H O A O all of them O D OC A A and…

A:

Q: What is the approximate pKa value of the proton drawn explicitly? OH

A: The pKa values of a compound tells us the acidity, lower pKa value means a stronger acid and a…

Q: what peaks on the given NMR correspond to the points on the given molecule (O-ethylsaccharin)

A: To assign NMR peaks for the O-ethyl saccharin from the given spectrum. The structure of the compound…

Q: How many stereocenters are present in this molecule? H H₂C² H3 C=C=C₂ H CH3

A: Stereocenter is a point or a location or generally a carbon center on which the exchange of two…

Q: HERRA 11 10 9 7 ppm 4 3 3 E C₂H₂O₂

A:

Q: Given the following tetrapeptide, determine the primary sequence: H. H2N CH N- CH- N-CH- OH ČH3 ČH2…

A: So we will determine the primary sequence of tetrapeptide given in the question.

Q: How many stereocentres are present in the compound shown below?

A: Stereocenters are those centers where 4 ligands of a carbon atom are different.

Q: A B `H D 220 200 180 160 140 120 100 80 60 40 20 PPM

A: The correct answer about C13 nmr spectrum is given below

Q: Beside each spectrum, list the important IR absorbances and the type of bond causing each signal.…

A: The IR spectrum consist of a broad peak around 3300 cm-1 and peak around 2900 cm-1. absence of peak…

Q: Explain the peaks in the images

A:

Q: X Y Inknown number oe 70 60 50 40 30 20 10 1440 0 1 1773.12om-t 1204 2m1 1734.17om 174om 1595 22m-1…

A: For amines, a medium peaks are observed at 3500 - 3300 cm–1. For primary amine (R–NH2), there are…

Q: 1 PPM

A: Number of signals ----------> Number of sets of protons in different electronic environment…

Q: Identify the compound from the given choices based on the mass spectrum given below. abundance 100…

A: In mass spectroscopy technique, a high energetic electrons are bombarded on the sample molecule…

Q: What is the structure based on the HNMR?

A: Nuclear Magnetic Resonance (NMR) spectroscopy is an analytical chemistry technique used to deduce…

Q: QUESTION 8 Select the functional group present in the molecule with formula C7H₁20 and the IR…

A:

Q: A solution of a chiral compound was prepared by dissolving 15.67 g in 16.00 mL of solvent. The…

A: Given data: Observed rotation = 62.41° Path length = 1.00 dm Mass of compound = 15.67 g Volume of…

Q: Can anyone help interpret/analyze this H NMR spectra? I need all the signs and bonds that it shows

A: We know, 1H-NMR spectroscopy, also known as proton nuclear magnetic resonance spectroscopy, is a…

Q: hi hbhj nm

A: I didn't get what you are asking for.

Q: Pure MSG, a common avor enhancer, exhibits a specic rotation of +24. (a) Calculate the ee of a…

A: a) The ee of a solution whose [α] is +10 is to be calculated b) [α] for the solution if the ee of a…

Q: Indicate (no more than 2) for the following compound: Homotopic Heterotopic Enantiotopic…

A: Homotopic: The type of compound which remains the same after interchanging the positions of the…

Q: Which of the five dyes tested in this experiment has the strongest ability to absorb light? How do…

A: Dyes absorb light due to their highly conjugated structure that includes aryl rings.…

Q: Which one is the incorrect statement regarding mass spectrum? The structure likely contains a…

A: The objective of the question is to identify the incorrect statement regarding mass spectrum. Mass…

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.