Organic Chemistry (8th Edition)
8th Edition
ISBN: 9780134042282
Author: Paula Yurkanis Bruice
Publisher: PEARSON
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Chapter 13.3, Problem 6P
a. Suggest possible molecular formulas for a compound that has a molecular ion with an m/z value of 86.
b. Can one of the possible molecular formulas contain a nitrogen atom?
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Determine the molecular formula for each of the following: a. a compound that contains only C and H and has a molecular ion with an m/z value of 72 b. a compound that contains C, H, and one O and has a molecular ion with an m/z value of 100 c. a compound that contains C, H, and two Os and has a molecular ion with an m/z value of 102 d. an amide that has a molecular ion with an m/z value of 115
In mass spectrometry, the molecular ion peak occurs at
O A. the largest m/z value.
O B. the smallest m/z value.
O C. the m/z value of the most abundant ion.
O D. an m/z value equal to the molecular weight of the sample molecule.
What is the Ka value for each of the compounds? Express the answers in proper scientific notation.
A. Determine the Ka value for the compound with
pKa = 10.26.
H3C-
OH
B. Determine the K₂ value for the compound with
pK₂ = 16.50.
OH
C. Determine the K₂ value for the compound with
pKa
= 5.21.
K₁ =
K₂ =
K₁ =
Chapter 13 Solutions
Organic Chemistry (8th Edition)
Ch. 13.1 - Which of the following fragments produced in a...Ch. 13.2 - What distinguishes the mass spectrum of...Ch. 13.2 - What is the most likely m/z value for the base...Ch. 13.3 - Prob. 5PCh. 13.3 - a. Suggest possible molecular formulas for a...Ch. 13.3 - If a compound has a molecular ion with an...Ch. 13.3 - Identify the hydrocarbon that has a molecular ion...Ch. 13.4 - Predict the relative intensities of the molecular...Ch. 13.5 - Which molecular formula has an exact molecular...Ch. 13.5 - Prob. 11P
Ch. 13.6 - Sketch the mass spectrum expected for...Ch. 13.6 - The mass spectra of 1-methoxybutane,...Ch. 13.6 - Primary alcohols have a strong peak at m/z = 31....Ch. 13.6 - Identify the ketones responsible for the mass...Ch. 13.6 - Prob. 16PCh. 13.6 - Using curved arrows, show the principal fragments...Ch. 13.6 - The reaction of (Z)-2-pentene with water and a...Ch. 13.9 - a. Which is higher in energy: electromagnetic...Ch. 13.9 - Prob. 20PCh. 13.13 - Prob. 21PCh. 13.14 - Which occur at a larger wavenumber: a. the C O...Ch. 13.14 - Prob. 23PCh. 13.14 - Prob. 24PCh. 13.14 - Rank the following compounds from highest...Ch. 13.14 - Which shows an O H stretch at a larger...Ch. 13.16 - Prob. 27PCh. 13.16 - a. An oxygen-containing compound shows an...Ch. 13.16 - Prob. 29PCh. 13.16 - For each of the following pair of compounds, name...Ch. 13.17 - Which of the following compounds has a vibration...Ch. 13.17 - Prob. 32PCh. 13.18 - A compound with molecular formula C4H6O gives the...Ch. 13.20 - Prob. 34PCh. 13.20 - Prob. 35PCh. 13.21 - Predict the max of the following compound:Ch. 13.21 - Prob. 37PCh. 13.23 - a. At pH = 7 one of the ions shown here is purple...Ch. 13.23 - Prob. 39PCh. 13.23 - Prob. 40PCh. 13 - In the mass spectrum of the following compounds,...Ch. 13 - Prob. 42PCh. 13 - Draw structures for a saturated hydrocarbon that...Ch. 13 - Rank the following compounds in order of...Ch. 13 - For each of the following pairs of compounds,...Ch. 13 - a. How could you use IR spectroscopy to determine...Ch. 13 - Assuming that the force constant is approximately...Ch. 13 - Norlutin and Enovid are ketones that suppress so...Ch. 13 - In the following boxes, list the types of bonds...Ch. 13 - A mass spectrum shows significant peaks at m/z. =...Ch. 13 - Prob. 51PCh. 13 - Prob. 52PCh. 13 - Prob. 53PCh. 13 - The IR spectrum of a compound with molecular...Ch. 13 - Rank the following compounds from highest...Ch. 13 - Rank the following compounds from highest...Ch. 13 - What peaks in their mass spectra can be used to...Ch. 13 - Prob. 58PCh. 13 - Which one of the following five compounds produced...Ch. 13 - Prob. 60PCh. 13 - Each of the IR spectra shown below is accompanied...Ch. 13 - Prob. 62PCh. 13 - Prob. 63PCh. 13 - How can IR spectroscopy distinguish between...Ch. 13 - Prob. 65PCh. 13 - Prob. 66PCh. 13 - Give approximate wavenumbers for the major...Ch. 13 - Prob. 68PCh. 13 - Which one of the following live compounds produced...Ch. 13 - Phenolphthalein is an acid-base indicator. In...Ch. 13 - Prob. 71PCh. 13 - How can you use UV spectroscopy to distinguish...Ch. 13 - Prob. 73PCh. 13 - The IR and mass spectra for three different...
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- Which of the indicated protons would have the smallest pKa value? C. H. H CH3 EC H H. d. b. b. C A Moving to another question will save this response. O O O 0arrow_forwardWhy is it incorrect to speak of a molecule of solid NaCl?arrow_forward16. The peak with the greatest m/z value for alcohols is given by m/z M-18, where M represents the molecular weight of the alcohols. The number 18 in "M-18" means that the radical cation loses a (an) molecule. A Carbon dioxide, CO2 В Ethene, C2H4 C Water, H20 Carbon monoxide, COarrow_forward
- For the m/z for each of the M+, determine all of the possible molecular formulas (CHNO) and number of DU's for each one. A.) 67 B.) 86arrow_forwardb. Calculate the max of the given compounds with the help of Woodward's Fiesher rule.arrow_forwardConsider the mass spectrum below. 100 80- 60- 20 0.0- 0.0 60 100 miz SDBS, National Institute of Advanced Industrial Science and Technology Which peak is the molecular ion? Choose one OA OB OD. OGarrow_forward
- 15. In a mass spectrum, will the molecular ion peak always be the base peak? A yes noarrow_forwardPropose a structure that is consistent with the following MS spectral data. m/z Intensity 121(M*) 47.9 122 4.0 Fill in the box next to each of the elements (C, H, N, O) with the number of atoms for the element that would appear in the proposed formula. Fill in "O" if there is no such element in the formula. Do not leave any boxes blank. Harrow_forwardwhich group is responsible for peak 1, 2, 3arrow_forward
- Select the best pair of answer below justifying the reason for your choice. Answer Q48 & 49arrow_forwardPredict splitting pattern of each proton type. Answers can be used more than once or not at all. HO e 1. quartet 2. cannot be determined 3. multiplet v d 4. triplet ve 5. doublet 6. singletarrow_forward2. Rank Ha, Hb, and Hc in order of increasing chemical shift. Hb Hc H2 H3C CH3 Hd OCH2CH3 Hb Ha На Не а. b.arrow_forward
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