Which hydrogen is expected to appear the most downfield in the 'H NMR spectrum of the molecule shown below? A CHb OHa HC .CH CH3C H2d OHe H(a) B H(b) C H(c) D H(d) E H(e)

. Draw the structure of the compound that best fits the following 'H NMR spectrum? CSH100

Predict if the peak for the circled proton disappear from the ¹H NMR spectrum when D₂O is added to the sample. .H I

Which one of the following compounds (from Figure #7) produced the 'H NMR spectrum (from Figure #8) shown below? Figure #7 inte compound A compound B compound C compound D Please click here if image does not display. Figure #8 3 203938 PPM 10 9 8 7 5 4 3 2 1 8 (ppm) Please click here if image does not display. O compound A O compound D O compound C O compound B

Explain how ‘H NMR spectroscopy could be used to distinguish between these two compounds.

Predict the coupling patterns of each 1 H NMR signals (as in 1 H NMR spectrum) for the compounds (i-x) below.

6) Draw the 13C NMR spectrum for the following compound.

Which structure with molecular formula C1H160 matches the IH NMR shown? The boxes are zoomed portions of the spectra. (d) (t) (quintet) (sextet) 2H2H 3H 1H 2H 3H 3H

Consider the following compound. H, CI Br (a) How many peaks will the 'H NMR signals of H, and H, be split? (b) Estimate the relative lon abundance of M, M+2, M+4, . in the mass spectrum of the compound. O Ihava answered this question Previous

(a) Rank each proton shown below in terms of relative chemical shift in the ¹H NMR spectrum. (1 = most upfield, 3 = most downfield) (i) (iii) H JO [ Ⓒ