Which of the compounds shown most closely corresponds to the IR data: 3500-3200 cm (weak) and 2950-2850 cm ? Select the single best answer. NH OH NH₂ Ex Ar > >
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- Assign molecules A, E, G, and H to the correct mass spectrum and provide the structure of thebase peak.(c) techniques? Draw the COSY spectra for H3C-CH2-CH,-C-OCH, CH3 How is 2D NMR affected by FT- to depict the correlations expected.Mass spectroscopic. What is the isotopic peak pattern of each : Organic compound with 2 bromine atoms. Organic compound with 2 chlorine atoms.
- Consider isomeric alcohols A and B and mass spectra [1] and [2]. (a) Label the molecular ion and base peak in each spectrum. (b) Use thefragmentation patterns to determine which mass spectrum correspondsto isomer A and which corresponds to isomer B.Q.1. Predict the relative intensity of the M, M+1, and M+2 peaks for a low resolution mass spectrum of a compound with molecular formula, C6H13Br. The natural abundances of the select isotopes are given below. 35 Cl: 75.8% 79Br: 50.5% 12C: 98.89% 37Cl: 24.2% (The ratio is almost 3:1) 81Br: 49.5% (The ratio is almost 1:1) 13C: 1.11%Given the following mass spectrum, point out the molecular ion and the base peak.
- 5. Tyrosine is an important amino acid in Biochemistry. Assign the peaks in the 'H-NMR to the hydrogens in the structure of tyrosine by placing a, b, c, and d in the appropriate corresponding boxes. The hydrogen atoms attached to O and N atoms do not need to be labeled on this spectrum. с 11 10 16 00 a H. H- H H -*|| NH₂ Tyrosine d -H ppmQU/ Which of these molecules best corresponds to the IR spectrum below, Explain? a) Methyl propanoate c) 4-hydroxy butanone d) benzoic acid 0.8 0.6 0.4 0.2 0.0 E b) butanoic acid 3000 2000 mp www Wavenumber (cm-1) 1000Which of the following molecules matches the given data? (Note: All the molecules have a M+ = m/z 102) C5H10O2 base peak = m/z 43