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- QUESTION 5 The IR, 'H NMR and 1°C NMR spectra of compound P are shown below. The molecular formula for compound P is CsH;NO2. Identify three (3) important absorption peaks on the IR spectrum and indicate the bond and wavenumber associated with each peak. Elucidate the structure of compound P and assign each peak in the 'H and 13C NMR spectra. (Hint: The compound consists of more than one functional group). а. b.Intensity (a.u.) 4000 3352 cm¹ 3500 3000 UNKNOWN B 1710 cm¹ 2000 1668 cm¹ 2500 Wavenumber (cm¹¹) 1500 1101 cm 1000 5001H 11 10 2H 2h 5 3H 3 An IR spectrum, a 13C NMR spectrum, and a ¹H NMR spectrum were obtained for an unknown structure. Draw the structure of this compound. 2 1 ppm
- 0.8 0.6 0.4 0.2 0.0 3000 2000 1000 Wavenumber (cm-1) ОН NH2 `NH2 A В C Transmitance6. C8H100 11 TRANSMITTANCE LOD HSP-04-492 0+ 10 4000 9 3000 8 5 7 6 : 5 ppm 2000 4 HAVENUMBERI-l 2: 2 1 3 1500 2 سهر 1 1000 0 500 200 T 180 CDS-06-431 DEPT-90 T 160 DEPT-135 140 120 100 لك -2 peaks u ppm 80 60 40 20 0Attach the spectra for A and B compounds here and identify the functional groups by completing the table for A and B respectively. S of them! Group Group Frequency Intensity (cm-¹) A Frequency Intensity (cm-¹) B 1. Acohol 2. Aromatic ring 3. c = c stretching vibration 4 CH bend 5. Amine.
- The FTIR spectra below is probably...* 100 % transmittance 80 60 9 20 Image adapted from https://sdbs.db.aist.go.jp wavenumber cm-1 0 4000 Methanol Ethanol Acetic acid Phenol Benzoic acid 3000 * 2000 1500 spectra adaptations Dr Phil Brown 2020. 1000 1500 to 400 cm-1 fingerprint region 400ge - mylau X Homepage- Genera X Pearson MyLab and Mas X O MasteringChemistry X v JS CH15 2022 W - Ge X I2I JS CH12 2022 W Not X O https://session.masteringchemistry.com/myct/itemView?assignmentProblemID=187325178&offset=next ssigment e 16.50 - Enhanced - with Feedback and Hints Part A What mass"of ammonium chloride should you add to 2.60 L of a 0.155 mol L-1 NH, to obtain a buffer with a pH of 9.50? For ammonia, K =1.76 x 10-5 Express your answer in grams to two significant figures. > View Available Hint(s) m Submit Request Answer wide Feedback O Type here to search 5°C I 8. 立The FTIR spectra below is probably... * % transmittance 100 80 60 40 20 Image adapted from https://sdbs.db.aist.go.jp wavenumber cm-1 0 4000 Methanol O Ethanol Acetic acid Phenol Benzoic acid 3000 2000 1500 spectra adaptations Dr Phil Brown 2020. 1000 1500 to 400 cm 1 fingerprint region 400
- 1. 0,ll zain IQ O [Template] P. -> Homework (1): When a sample of 4-heptanone was irradiated for 150 s with 315nm radiation with a power output of 60 W under conditions of total absorption, it was found that 3.8 mmol C2H4 was formed, What is the quantum yield for the formation of ethene?Alsorbance Absorbance Absorption Spectrum of CoCl,(aq) Beer's Law Plot of CoCl, at = 560 nm 045 05 04 03 y = 48571x+0j0038 02 200 300 400 T00 S00 005 01 Wavelength inm) Concentration (M) Figure 1: Absorption Profile for cobalt (II) chloride Figure 2: Cobalt (II) chloride standard curve (Beer's Law Plot)* www.ucirvine.instructre.com 2. Place an arrow at the maximum absorbance and extrapolate the wavelength max. Amax = (be sure to include the unit). 3. Determine by concentration of an unknown solution of cobalt (II) chloride having an absorbance of 0.25. Method 1: Extrapolation (mark the concentration on the plot) b. Method 2: Calculation (show your work) a. Life University CHM 111 March 2021Transmittance (%) Transmittance (%) 100 50 4000 100 4000 3000 2000 1500 Wavenumber(cm¹) 1500 Wavenumber(cm¹) 1000 1000 500