Question

4. order the chemical shifts of the circled protons in the following list of compounds from the farthest downfield (highest ppm number) to lowest.

5. The IR spectra of the following compounds should a strong broad signal centered at 3520 cm^-1. After a chemical reaction was performed on this compound the signal at 3520 has disappeared and was replaced by a strong signal at 1720. Which ser of reactants and products agree with this experimental data?

6. A C^13 spectra of an aromatic di-halide showed 4 carbon signals in the aromatic region of the spectra. Which of the following structures is constant with this data?

4. Order the chemical shifts of the circled protons in the following list of compounds form the farthest downfield (highest ppm number) to lowest. (5 points) CH2CH3 chce CH,CH CH; 5. The IR spectra of the following compounds should a strong broad signal centered at 3520 cm. After a chemical reaction was performed on this compound the signal at 3520 had disappeared and was replaced by a strong signal at 1720. Which set of reactants and products agrees with this experimental data? (6 points) OH OH OH 6. AC spectrum of an aromatic di-halide showed 4 carbon signals in the aromatic region of the spectra. Which of the following structures is constant with this data? (6 points)

Answer 1

Order of Chemical Shift in highest ppm
Q. Order the chemical shifts of the circled protons in the following list of compounds form the farthest down field Chighest ppm number) to lowest. CH3 – CH3 CH3-cth He-4-cha CA) 2 CH3 CO CD => order of chemical shifts of circled protons in. highest ppm number to lowest ppm number is – a CH3 - CH2 - 6 > *6568.0 ppm. H CHLch che > > Hz (ch37 4548 Og Ppt CBD go to 1000 ppm. 50 to Toppm. 3.0 to 4:00pm CD (0) : (E) Esplucination) - ij The highest order compound is D. The chemical CAT shift of profon is grotolo 0ppm. because these profon Buttached to C-o group to due to shielded effect chemical shift is highest. il In (B) compound Proton is attached to aromatic ring of inasomar due to this effect chemical shift 13 6.5 to 8.oppm. lii) In Cco compound proton B attach to cac bond & contain 1 Sheilding effect. henie highest peak observed. in In (El compound Proton B attach to those carbon having electen

#feet of inerzeese pecek. negative group 13 attached. Due to these electronegal group Profon contain shielding effect of inerzese 3.0 to 400 ppm 1 vY IN CA) compound there B lowest order compound. due to lowest chemical shift. There chemical sh 13 org ppm.. Because of in ethane molecule there i3. deshielding effect of another the group of chemical Shift B lowest value. Scanned with CamScanner
no. to lowest no.