Organic Chemistry
7th Edition
ISBN: 9780321803221
Author: Paula Y. Bruice
Publisher: Prentice Hall
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Textbook Question
Chapter 14.3, Problem 7P
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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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?
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.
Chapter 14 Solutions
Organic Chemistry
Ch. 14.1 - Which of the following fragments produced in a...Ch. 14.2 - What distinguishes the mass spectrum of...Ch. 14.2 - What is the most likely m/z value for the base...Ch. 14.3 - Prob. 5PCh. 14.3 - If a compound has a molecular ion with an...Ch. 14.3 - a. Suggest possible molecular formulas for a...Ch. 14.3 - Identify the hydrocarbon that has a molecular ion...Ch. 14.4 - Predict the relative intensities of the molecular...Ch. 14.5 - Which molecular formula has an exact molecular...Ch. 14.5 - Prob. 11P
Ch. 14.6 - Sketch the mass spectrum expected for...Ch. 14.6 - The mass spectra of 1-methoxybutane,...Ch. 14.6 - Prob. 14PCh. 14.6 - Identify the ketones responsible for the mass...Ch. 14.6 - Prob. 16PCh. 14.6 - Using curved arrows, show the principal fragments...Ch. 14.6 - The reaction of (Z)-2-pentene with water and a...Ch. 14.9 - Prob. 19PCh. 14.9 - Prob. 20PCh. 14.9 - Prob. 21PCh. 14.13 - Prob. 22PCh. 14.14 - Which occur at a larger wavenumber: a. the C O...Ch. 14.14 - Prob. 24PCh. 14.14 - Prob. 25PCh. 14.14 - Rank the following compounds from highest...Ch. 14.14 - Which shows an O H stretch at a larger...Ch. 14.15 - Prob. 28PCh. 14.15 - a. An oxygen-containing compound shows an...Ch. 14.15 - Prob. 30PCh. 14.15 - For each of the following pair of compounds, name...Ch. 14.16 - Which of the following compounds has a vibration...Ch. 14.16 - Prob. 33PCh. 14.17 - A compound with molecular formula C4H6O gives the...Ch. 14.19 - Prob. 35PCh. 14.19 - Prob. 36PCh. 14.20 - Predict the max of the following compound:Ch. 14.20 - Prob. 38PCh. 14.21 - a. At pH = 7 one of the ions shown here is purple...Ch. 14.21 - Prob. 40PCh. 14.22 - Prob. 41PCh. 14.22 - Prob. 42PCh. 14 - In the mass spectrum of the following compounds,...Ch. 14 - Prob. 44PCh. 14 - For each of the following pairs of compounds,...Ch. 14 - Draw structures for a saturated hydrocarbon that...Ch. 14 - a. How could you use IR spectroscopy to determine...Ch. 14 - Assuming that the force constant is approximately...Ch. 14 - In the following boxes, list the types of bonds...Ch. 14 - A mass spectrum shows significant peaks at m/z. =...Ch. 14 - Prob. 51PCh. 14 - Prob. 52PCh. 14 - Prob. 53PCh. 14 - How can you use UV spectroscopy to distinguish...Ch. 14 - Rank the following compounds from highest...Ch. 14 - Rank the following compounds from highest...Ch. 14 - What peaks in their mass spectra can be used to...Ch. 14 - Each of the IR spectra shown below is accompanied...Ch. 14 - Prob. 59PCh. 14 - Prob. 60PCh. 14 - How can IR spectroscopy distinguish between...Ch. 14 - 62. Draw the structure of a carboxylic acid that...Ch. 14 - Prob. 63PCh. 14 - Give approximate wavenumbers for the major...Ch. 14 - Prob. 65PCh. 14 - Prob. 66PCh. 14 - Prob. 67PCh. 14 - The IR spectrum of a compound with molecular...Ch. 14 - Which one of the following live compounds produced...Ch. 14 - Prob. 70PCh. 14 - Phenolphthalein is an acid-base indicator. In...Ch. 14 - Which one of the following five compounds produced...Ch. 14 - The IR and mass spectra for three different...
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- Draw a structure for a carboxylic acid that has a molecular ion with an m/z value of 116.arrow_forwardWhat 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 =arrow_forwardWhich 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_forward
- Why 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_forwardb. Calculate the max of the given compounds with the help of Woodward's Fiesher rule.arrow_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_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_forward15. In a mass spectrum, will the molecular ion peak always be the base peak? A yes noarrow_forward
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