DOW momorpo IR Spectrum (KBr disc) 1658 2000 4000 100 80 20 % of base peak 3284 3000 40 13C NMR Spectrum (50.0 MHz, CDCI, solution) 10 106 MIRE 137 80 120 160 200 m/e DEPT CH CH CH proton decoupled 200 ¹H NMR Spectrum (200 MHz, CDCI, solution) exchanges with D₂O on warming v (cm¹) 1600 160 if M** 179 120 expansion 1200 7.6 800 Mass Spectrum C10H13 NO₂ 240 280 solvent 80 7.0 ppm UV Spectrum Amax 250 nm (log, 3.1) Amax 287 nm (log, 2.2) solvent: chloroform 40 0 8 (ppm) TMS

2. Consider the two ¹H NMR spectra sketched below that correspond to the molecule shown. Assign the peaks in each spectrum to the different sets of equivalent protons in the molecule. Why do the spectra for this molecule look different when measured at different temperatures? IN 84°C M 38°C 3 N 1 ppm

please don't provide handwriten solution ......

Counterfeit drugs are a common problem in developing regions of the world. Oftentimes, counterfeit pills are made with compounds such as lactose. A lab technician has obtained the IR spectrum shown above for a sample reported to be citalopram, an antidepressant drug. Does the IR spectrum belong to citalopram or lactose? Explain your answer by describing what feature of the IR spectrum confirms your choice and describe what feature is missing from the IR spectrum for the other compound. A. citalopram B. lactose

orgo chem II nmr  please help me fill out this chart!

1. What do you suppose is the molecular weight of the molecule that gives the mass spectrum below? 27 Hai 55 26 45 30 40 50 Rel Abund 100r 80- 60- 40- 20- 0- m/z0 10 Rel Abund = Relative Abundance Formula 1: 20 Formula 2: Formula 3: m/z = mass divided by charge 3. What is the base peak? 2. Provide three different molecular formulas (organic molecules, please) that are possible for a molecule with the molecular weight you have chosen. What are the degrees of unsaturation (SODAR) for each? Degrees of unsaturation: Degrees of unsaturation: Degrees of unsaturation: 60 4. Draw a possible molecule for each formula. based on Formula 1 5. Which structure do you think is correct? 72 70 based on Formula 2 80 What mass is lost from the molecular ion to get to the base peak? 90 100 based on Formula 3

1.Calculate the theoretical yield of acetylsalicylic acid from the given starting amount of salicylic acid. Show the calculation with units.   Given: 1.4 g of your salicylic acid product in a 125 mL Erlenmeyer flask; record the weight Next, briefly explain if possible:What key change do you expect to see in the IR spectrum when the salicylic acid starting material is converted to the acetylsalicylic acid product?And or: What key change do you expect to see in the 1H NMR spectrum when the salicylic acid starting material is converted to the acetylsalicylic acid product?

Match each of the following labeled molecules with the IR spectrum (Multiple answers might be possible for each spectrum, write the letter of all that apply). corresponding Molecule 1. Molecule 4 Molecule 7 OH OH e e H Molecule 2 Molecule 5 Molecule 8 Molecule 3 Molecule 6 Molecule 9

Below are three MS spectra, Spectra 1, 2, and 3. Each of this mass spectrum corresponds to either Compound A (contains one Cl in the molecular formula), Compound B (one I in the molecular formula), and Compound C (one Br in the molecular formula). Identify which spectra corresponds to which compound. Provide explanations for your choices.

Identify the compound that gives the mass spectrum and infrared spectrum shown here.