Using the HDI, IR, and NMR data from the previous questions, select the structure of the unknown compound with the formula C5H₁0O. Note: All the structures provided here have the same formula of C5H10O to highlight the importance of characterization data. Think about theoretical HDI, IR, and NMR data for each structure option. O

The options to choose from are: -Relative number and number of types of hydrogen -absolute number and number of types of hydrogen -confirms molecular weight of molecule -relative number and number of types of carbon -confirms presence of functional groups -number of types of carbon -relative number of functional groups

Suggest structures given the 1H NMR spectra and formulas for each of the compounds below. C9H10O

QUESTION 8 Select the functional group present in the molecule with formula C7H₁20 and the IR spectrum seen below: LOD TRANSMITTANCE!! 5D D+ 4000 2932 4 1396 2908 1362 13 2856 8 2809 37 2705 35 1727 5 1461 Alcohol Aldehyde Ether Ketone 1351 1329 1300 1285 17 1267 3000 64 66 72 72 6B 62 72 70 1233 1224 74 84 1189 1170 7 70 64 1156 1144 BO 68 1133 2000 66 1099 1084 58 68 1050 1038 72 72 1033 1025 70 967 42 HAVENUMBERI- 943 67 916 55 893 52 842 74 829 74 761 681 Click Save and Submit to save and submit. Click Save All Answers to save all answers. 72 66 1500 mm www 1000 mm 500

The functional groups in an organic compound can frequently be deduced from its infrared absorption spectrum. A compound exhibits strong, broad absorption between 3300 and 3500 and at 1050 cm-1. Relative absorption intensity: (s)=strong, (m)=medium, (w)=weak. What functional class(es) does the compound belong to? List only classes for which evidence is given here. Attach no significance to evidence not cited explicitly. Do not over-interpret exact absorption band positions. None of your inferences should depend on small differences like 10 to 20 cm-1. The functional class(es) of this compound is(are) -(Enter letters from the table below, in any order, with no spaces or commas.) a. alkane (List only if no other functional class applies.) b. alkene c. terminal alkyne d. internal alkyne h. amine i. aldehyde or ketone j. carboxylic acid k. ester I. nitrile e. arene f. alcohol g. ether

1.Predict the structure that would give the following ¹H and ¹3C-NMR spectra for C₂H5CI: 3.6 ille 9.0 40 3.5 8.0 35 3.4 3.3 CHCl3 7.0 30 6.0 سد 25 1.80 1.70 1.60 5.0 4.0 Chemical shift (8, ppm) 20 PPM 2H T 15 3.0 2.0 10 3H 1.0 5 TMS 0.0 0

predict the structure of the unknown compound using the image attached. Annotate all spectraEach spectra must be used to arrive at the answerThis means each piece of provided information should be annotated in some way depending on the type of analysis and information gained from it.calculate the HDI for proposed structure and provide the chemical formula

What is the structure of this molecule and ignore the 77 ppm triad in Csrbon-13 NMR. Mass of structure is 162.

Shown are the H NMR spectra for 2 isomeric compounds three and four of the formula C5H10O. The IR spectrum of both have an absorption in the region of 1700 to 1730 cm-1. Provide the structure for each compound, and which hydrogen atoms give rise to the peaks in each spectrum. The peak at 7.27 ppm can be ignored, and the red numbers are integration values.

Suggest structures given the 1H NMR spectra and formulas for each of the compounds below. C4H10O