Question: Compounds A and B are carboxylic acids. Identify each one on the basis of its 1H NMR spectrum. (a) Compound A (C3H5ClO2) (Figure 19.10). (b)

Compounds A and B are carboxylic acids. Identify each one on the basis of its 1H NMR spectrum.
(a) Compound A (C3H5ClO2) (Figure 19.10).
(b) Compound B (C9H9NO4) has a nitro group attached to an aromatic ring (Figure 19.11)
FIGURE 19.10
The 200-MHz 1H NMR spectrum of compound A (C3H5ClO2)

FIGURE 19.11
The 200-MHz 1H NMR spectrum of compound B (C9H9NO4) (Problem 19.34b).

Compound A C3H,CIO2 3.8 3.6 3.0 2.8 12.0 1.0 10.0 9.0 8.07.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 Chemical shift (8,ppm) 3 Compound B CoHgNO4 8.2 8.0 7.8 7.6 7.4 4.0 3.8 1.8 .6 14 13.0 12.0 11.0 0.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 .0 0.0 Chemical shift (, ppm)

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