Chapter 12, Problem 81AP

Which of the following spectrum provides information about the functional groups present in a sample? A. பார் B. Intensity 100 200 180 160 140 120 100 80 60 60 40 20 20 Chemical shift (6) 80- 60 40- 20. 0 4000 3500 3000 2500 2000 C. 100 80 60- 40- 20- 0 D. Intensity 10 20 40 1500 Wavenumber (cm-1) 60 m/z WOWRO 1000 500 80 100 120 TMS 10 9 8 7 6 5 4 Chemical shift (8) 3 2 0 ppm 0 ppm

Draw structures corresponding to the names given [FOUR]. a. 4-fluoronitrobenzene b. p-bromoaniline c. 3,5-Dichlorophenol d. m-Dimethylbenzene od si to g. o-chlorobenzaldehyde

Please correct answer and don't used hand raiting

Please correct answer and don't used hand raiting

For each molecule below, predict whether the molecule would be expected to show aromatic character or not. Explain your answer in each case. These molecule are planner. [THREE] a. b. HIN: (14) annulene C. OH d. :0: :0: +

Drawing Instructions: Draw structures corresponding to each of the given names. a. Draw: 2-ethyl-1,3-butadiene b. Name:

Please correct answer and don't used hand raiting

с. d. СнЗ Сизена=-4=4 Cla H Eget3 над f. e. H-C=C-CH3 + 285 → H-C=C-CH3+2не H-C=C-CH3 + Nanta» g+ CH₂ CH₂-G = G-C₁₂-G=CH₂ + 2HI→ H H H AL

The IR (infrared) spectra of two pure compounds (0.010 M compound A in solvent and 0.010 M compound B in solvent) are given. The pathlength of the cell is 1.00 cm. The y-axis in the spectra is transmittance rather than absorption, so that the wavenumbers at which there is a dip in the curve correspond to absorption peaks. A mixture of A and B in unknown concentrations gave a percent transmittance of 49.8% at 2976 cm¹ and 44.9% at 3030 cm-1 Wavenumber 0.010 M A 0.010 M B Unknown 3030 cm-1 35.0% 93.0% 44.9% 2976 cm-¹ 76.0% 42.0% 49.8% What are the concentrations of A and B in the unknown sample? Transmittance (%) 100 90 80 70 60 50 40 2976 cm-1 30 3030 cm-1 20 Pure A 10 Pure B 0 3040 2990 Wavenumber (cm-1) 2940 2890