could you help me out with these question 2. How many hydrogen atoms are in the structure?3. The total number of hydrogen atoms in the chemical structure should equal the total number ofprotons integrated in the spectrum. What is the total number of protons integrated in the spectrum?Does the total number of hydrogen atoms in the structure match the total number of protonsintegrated in the spectrum? Show your work. (6. Use the 'H NMR Chemical Shift Table to predict the ppm range expected for each chemicallyequivalent proton listed in Problem 4.7. Predict the splitting pattern of each proton signal. Splitting patterns are predicted by identifyingthe number of equivalent neighboring protons (singlet, doublet, triplet, quartet, multiplet...) (8. Discuss how the 'H NMR spectrum can be used to help prove the identity of the product.Consider the structural features (chemical shifts and presence or absence of signals) and the numberof protons (integration) in the product compared to the starting material. ( 8.5 8.00.960.936.18-H3CFO7.5 7.0 6.5ROH6.00.971.02 जू1.01-5.5 5.0 4.5 4.0f1 (ppm)Fsor3.50.76-3.00-3.0 2.5 2.0H2O1.5 1.00.5 0.0-80-70-60-50-40-30-20-10-0-10

2. How many hydrogen atoms are in the structure? 3. The total number of hydrogen atoms in the chemical structure should equal the total number of protons integrated in the spectrum. What is the total number of protons integrated in the spectrum? Does the total number of hydrogen atoms in the structure match the total number of protons integrated in the spectrum? Show your work.

2. How many hydrogen atoms are in the structure? 3. The total number of hydrogen atoms in the chemical structure should equal the total number of protons integrated in the spectrum. What is the total number of protons integrated in the spectrum? Does the total number of hydrogen atoms in the structure match the total number of protons integrated in the spectrum? Show your work.

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL4: Proton (1h) Nmr Spectroscopy

Section: Chapter Questions

Problem 7E

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The proton NMR spectrum in Figure 19.39 is for an organic compound containing a single atom of bromine. Identify the compound.
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8. In real life, NMR samples often contain impurities, so extra signals will appear on your spectrum that are not related to your product. The document "Common NMR impurities" lists some common impurities and their NMR data. Here are some instructions for reading this document: o Use Table 1 on page 2 of the document, focusing on the column for CDCI3. (This is the NMR solvent we are using.) o The impurities are listed in the first column. o The "mut" column tells you the multiplicities those signals should have. • s = singlet, d = doublet, t = triplet, q = quartet, etc. o The numbers in the table are the chemical shifts that certain impurities appear at. o For example, if diethyl ether is present in your sample, you should see two signals: a triplet at 1.21 ppm and a quartet at 3.48 ppm.
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5. A sample of a red dye and a sample of a blue dye both have the same concentration. Their Absorbance is measured using the same spectrophotometer. At a particular wavelength, will both samples give the same Absorbance reading? Why or why not?
Each peak in the spectrum below can be used to provide a measure of the mass of this protein, you can work out the charge associated with each peak, and measures can be averaged to find the overall mass. Use simultaneous equations to find the charge associated with each peak in the spectra below, which will allow you to calculate the average mass of each species. Include an estimate of the error associated with this measure
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