Question: IR spectrum shown for C5H10O2. Draw structure and label important peaks and explain how the structural formula was determined.

Question: A 13C NMR spectrum is shown for a molecule with the molecular formula of C5H10O2. Draw the structure that best fits this data. Otherwise put the IUPAC (official) name of the structure that best fits this data.

A compound with molecular formula C5H10O2 has the following 1H NMR spectrum: 1.15 (t, 3H), 1.25 (t, 3H), 2.33 (q, 2H), 4.13 (q, 2H). Draw its structure. Hint: How many rings and π bonds does C5H10O2 have? Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars.

A compound, C5H10O2, has an IR spectrum showing a peak at 1735 cm-1. Its 1H NMR spectrum has peaks at delta 1.3 (6 H, doublet), 2.0 (3 H, singlet), and 5.0 (1 H, septet). Draw its structure in the window below. You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. Do not include lone pairs in your answer.

Question: Compound E, chemical formula C5H10O2 , is a volatile liquid (boiling point 88°C). The 13C-NMR spectrum shows signals at ? 171.0, 68.3, 23.0, and 17.6 ppm. The predicted 1H-NMR spectrum is shown, propose a structure for compound E.

Question: 1. Consider the molecular formula C5H10O2. (1) Draw the Lewis structures of 3 different isomers. (2) Label all functional groups. (3) Convert each structure into a bond-line formula and a condensed formula.

Question: Draw C5H10O2 that has the following 1H NMR spectrum: 1.15 (t, 3 H), 1.25 (t, 3 H), 2.33 (q, 2 H), 4.13 (q, 2 H).

Question: Suggest the structure that fits best: A C5H10O2 compound shows a strong infrared absorption at 1100 cm-1, but no absorption at 3300 to 3400 cm-1. Its 1H NMR spectrum has sharp singlet peaks at δ1.3 and 4.0ppm (intensity ratio 3:2). Its 13C NMR spectrum shows three lines at δ 98, 68 and 20 ppm. Suggest a structure for this compound.

Question: Draw the structure of the compound C5H10O2 that exhibits the 13C-NMR spectrum and DEPT data below.Impurity peaks are ommitted from the DEPT data list. The triplet at 77 ppm is CDCl3.

Question: A carboxylic acid with molecular formula C5H10O2 is treated with thionyl chloride to give compound A. Compound A has only one signal in its 1H NMR spectrum. Draw the structure of the product that is formed when compound A is treated with excess ammonia.