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- Consider the following compounds to predict the one with the highest Rf. но HO HO Y W O Y and W have the same Rf value. O W O X O YWhich compound has a larger Rf-value? ExplainMatch the expected positive result of each cations. Black pptYellow pptWhite pptReddish-brown pptRed to lavender shadeBrown stainNone among the choices Sn Pb Hg (Group II) Cu Bi Hg (Group I) As Ag Cd Sb Sn Pb Hg (Group II) Cu Bi Hg (Group I) As Ag Cd Sb
- J NA 32. The IR spectrum of the molecule shown below has a peak that is slightly above 3000 cm Why? (hint: thnk about the geometry of the carbons in the ring) OHبله HO O A Of the compounds shown, which of the following would have the largest Rf value? OB A A and C B and C B2) Which of the circled bonds absorbs at highervin an IR spectrum? 6 负面 萬 OF B OH: -N H
- 1. The energy of a photon is. proportional to its wavelength and proportional to its frequency. (directly or indirectly) 2. Which of the following has a lower characteristic stretching frequency, the C O bond or the C-O bond? Explain briefly. C=0 3. Ethyne HCECH does not show IR absorption in the region 2000-2500 em-! because. 4. Which statement best explains why a carbonyl absorbs infrared radiation at a higher frequency than an alkene absorption?Which of the following molecules do not absorb in IR spectroscopy? O co O2 O NO O HCI Next3 Identify compounds and their according peaks in IR spectrum
- draw the strucutre based off the IR spectrum, 1H NMR spectrum, and 13C NMR spectrum for this compound. This compound is an ester that is commonly used as food additive to give foods and beverages a fruity flavor. Its molecular formula is C7H14O2kindly answer from C to E5. Using the letter designations, rank the following compounds from lowest carbonyl stretching frequency to highest. 100 lowest highest 6. For the following molecule, provide the number of peaks you expect in each ¹H NMR signal due to splitting in the boxes provided. 80 60 40 7. a. Circle the compound below that corresponds to the IR spectrum shown. & Olan gota arte OLOCH, -OCH₂ -CH₂ H 20 *-=Aze-zu OL 4000 لو سلو سلم (b) A 3500 3,5 3000 4 H₂C EL CH-O CH3 B H3C 2500 4.5 wavelength (um) 5 5.5 6 7 8 9 10 2000 1800 1600 1400 1200 1000 wavenumber(cm) 11 12 13 14 15 16 800 600