Please someone answer these questions for me. obic and hydrophilic of as this wi
ID: 2269213 • Letter: P
Question
Please someone answer these questions for me. obic and hydrophilic of as this will inform about possible functional and n small amounts of substance. Notice that to test the solubiltyps ioase ts solubility in solution, you can also test its solubilit Additional notes abo the NMR experime paramete your compound and solvent are needed UV-Vis and IR spectra of the compound to ssistance from the identify its functional technical staffif you think you need it can obtain the 'H-NMR, "C-NMR and mass specto your compound from the lab expert in NMR mass spectrum Results1) Using the above expression, calculate the weight of aspirin and caffeine in one tablet, and also express these results as weight hem in your percentage (w/w) in a tablet abook) 2) Compare your results to the contents claimed by the manufacturer and discuss any differences observed 3) Are there any limitations to quantitation by Q-NMR? 4) Discuss the approach carried out to identify the unknown compound assigned to you (part 4 of the practical). Provide the spectra in the lab book and their respective interpretation. Identify the unknown compound based on the evidence obtained 5) Assign the signals obtained for caffeine and aspirin in the NMR spectra to the different parts of the molecules. 6) Describe which properties are important in the selection of the solvent used to dissolve the samples in NMR. Provide examples of a range of solvents typically used in NMR. 7) Explain, within 200 words, the phenomena that take place at the atomic level in a sample that results in its 'H-NMR spectrum for qualitative analysis. 12Explanation / Answer
Answer 1 , 2, and 4 depends on your result what you are getting in your lab record.
Answer : 6
NMR spectra are usually measured using solutions of the substance being investigated. It is important that the solvent itself doesn't contain any simple hydrogen atoms, because they would produce confusing peaks in the spectrum.There are two ways of avoiding this. You can use a solvent such as tetrachloromethane, CCl4, which doesn't contain any hydrogen, or you can use a solvent in which any ordinary hydrogen atoms are replaced by its isotope, deuterium - for example, CDCl3 instead of CHCl3. All the NMR spectra used on this site involve CDCl3 as the solvent.
The solvent should have unpaired one electron. Regular solvents are hydrocarbon.
Answer:7
1H-NMR means Proton-nuclear magnetic resonance.
It produced due to chemical shift in the substance.