25. In a chemical plant, the crude product flowing from a reactor must be analyzed to determine the concentration of the reactant and product to decide whether to rework it or to send it to distillation prior to shipment. Which analytical procedure would you need to perform for this analysis: a. 'H NMR b. 13C NMR c. GC/MS d. IR e. UV

3. Which is a stronger base, and why? I-Z: H N

7. Which compound would produce the ¹H NMR spectrum below? 4 yea Br A. 3 ہو میو میڈ gta B. Br 2 PPM C. D. Br Br. E. 0

Deduce the structure from the h nmr data

6. The reaction of the formation of an azo dye is possible for the identification of drugs: A. Nifedipine B. Emoxipin C. Atropine sulfate D. Nicotinic acid diethylamide E. Pyridoxine hydrochloride

Answer the following questions: a. What is the relationship between chemical shift in ppm and operating frequency? b. What is the relationship between chemical shift in hertz and operating frequency? c. What is the relationship between coupling constant in hertz and operating frequency? d. How does the operating frequency in NMR spectroscopy compare with the operating frequency in IR and UV/Vis spectroscopy?

Question 28

11. Sketch and completely label the 1H-NMR spectra of the following compounds: a. 12ppm HO b. Cl 10ppm Oppm Oppm

A Grignard reaction was conducted using bromobenzene and benzaldehyde to make diphenylmethanol. How can we know that the NMR for diphenylmethanol is in fact diphenylmethanol apart from the title,  Analyze and annotate the NMR to prove it's identity.

5. Use the simulation to collect data and sketch the spectrum for Nickel (II) Chloride. Absorbance 400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700 720 Wavelength (nm) What color is this solution? a. b. Which primary colors does the solution absorb? C. Which primary colors does the solution transmit (not absorb)?