The 1H NMR spectrum of chloromethane recorded on a 300 Hz NMR spectrometer consists of signals at 444 Hz and 1071 Hz  downfield from TMS. Calculate the chemical shift of each absorption. Give answer in parts per million.

10.9 A compound of molecular formula C₂H₂ClO₂ has peaks at 55.8, 56.8, 112.9, 113.4, 116.2, 123.1, 149.5, and 153.9 in its proton- decoupled ¹3C NMR spectrum. Give the structure of the compound and assign as many signals as possible to the carbons in the structure.

A student takes an IR spectrum of an unknown compound. The IR spectrum shows significant stretches at 3159 cm³¹ (m, sh), 3089 cm ¹ (m, sh), 3000 cm ¹ (m, sh), 2997 cm-¹ (m, sh), 1620 cm-¹ (s, sh), 1494 cm-¹ (s, sh), and 1210 cm-¹ (s, sh). Which possible compound is it? Key: S = Strong, M = Medium, W = Weak, Sh = Sharp, Br = Broad Anisole Aniline O Acetanilide O Acetone O Phenol

Explain why 2-chloropropene shows signals for three kinds of protons in its 1H NMRspectrum? Draw the structure and predict the approximate values for 1H-NMR spectra.