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- 11. Kindly please provide the answer only ASAP3) Explain in a few short sentences how IMFS, acid/base reactions, equilibrium, and thermodynamics come together to help to explain how ibuprofen can be separated from caffeine using an acid/base liquid/liquid extraction? N N. НОA student was trying to determine the identity of an unknown compound. The melting point of the compound was 117-118oC. The student narrowed the possible compound down to the following: Compound Melting Point Range acetanilide 113-115oC fluorene 114-116oC mandelic acid 120-122oC A second student, doing the same experiment as above, found that their melting point was 100-108oC. What is wrong with the student’s melting point? Propose two reasons why the melting point could be incorrect. View keyboard shortcuts
- Annotate the NMR spectra. Assign the hydrogens to the structure of methyl 3-nitrobenzoate.What are the functional groups in Camphor and Isoborneol? What peaks show up in their respective IR spectrum + wavenumber (cm-1)Explain the difference between absorption and adsorption in natural dyes. Use sketches to clarify your explanation.
- 7. Please provide correct answers. Thanks in advanceCalculate k, the degradation rate constant, responsible for drug degradation in this solution (in month-1).3. (a) The optical rotation [a]20 of aqueous samples of pure a-D-glucose and 1 pure ß-D-glucose were measured over time and a graph plotted (below). The optical rotation of both samples tends towards the same value, +52.7, as time proceeds. Explain, with the use of a diagram, why this trend is observed. +112 [a] +52.7 +19 Time
- 9. Phosphotyrosine (shown below) has four ionizable functional groups (pK1 = 2.5, pKR1 = 2.1, pKr2 = 7.2, pK2 = 9.5). (a) Write the equilibrium equation for its four ionization forms and assign the proper pka for each ionization. DRAW the structure of phosphotyrosine in each ionization state. What is the net charge on the phosphotyrosine molecule in each ionization state? *H3N. pk2 - 9.5 .COOH pK, - 2.5 O=P-OH pKRI - 2.1 ÖH pKRI - 7.2 (b) Draw the titration curve of phosphorotyrosine and indicate each pKa and the isoelectric point (pl), indicate the molar equivalents of OH on the x-axis.6. (Chapter 15 - 47b) An aromatic compound, C9H12 has the following H NMR spectrum and a peak at 750 cmt in its IR spectrum. Answer the following questions. Chem. shift Rel. area 1.19 2.31 2.64 7.13 1.50 1.50 1.00 2.00 TMS 10 3 O ppm Chemical shift (6) 4(a). The IR peak at 750 cm in its IR spectrum indicate that the compound is. disubstituted = 4(b) The name of the compound is = Intensity-011/19 CH3 HO HO CH2 HO H HO H HO HO. H OH HO" Но H. 02,00~ CH3 Но HN ZHN" CH3 explain your choices. (9) Which of the following molecules might also make a suitable resolving agent for ibuprofen? Briefly