Organic Chemistry - Standalone book
10th Edition
ISBN: 9780073511214
Author: Francis A Carey Dr., Robert M. Giuliano
Publisher: McGraw-Hill Education
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Question
Chapter 20, Problem 51P
Interpretation Introduction
Interpretation:
The structure of compound that has molecular formula
Concept introduction:
Spectroscopy method is used to identify the structure of the molecule. It is based on the interactions between matter and
Proton NMR spectroscopy identifies the number of hydrogen atoms present in a molecule and the nature of the
The value of chemical peaks depends upon the chemical environment around the hydrogen atom.
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Q 1(a)
Methane, CH4 is a tetrahedral molecule and does not exhibit a permanent dipole
moment (i.e. it has a dipole moment of 0). Nonetheless, in microwave spectroscopy
methane does exhibit a weak, but measurable absorbance. Explain why you think this
is the case?
Q 1(b)
The diatomic molecule 12C32S has been detected in interstellar gas clouds by
microwave spectroscopy. The masses of the two atoms are C = 12.00 amu and S=
31.972 amu and 12C32S has an equilibrium bond length of 1.534 Å.
Predict which rotational transition in 12C32S will have the greatest population at a
temperature of 85 K.
13C NMR spectroscopy provides valuable information about the environments of a molecule's carbon atoms. Since carbon atoms are often connected to hydrogen atoms, which could split the carbon signal through spin-spin coupling, the coupling between C and H is often "turned off" through the use of broadband decoupling, causing each C signal to appear as a singlet.
Draw an isomer of C5H11Cl that would be expected to have four resonances in its 13C NMR spectra.
The infrared absorbtion of the N-H stretch in amines occurs approximately at
a wavelength of 2.9 x 10-6 m. What is the approximate vibrational force
constant, k, of N-H bond?
Note: you can assume the reduced mass is equal to the mass of the H atom
(which is reasonable since it's attached to a much heavier atom).
48.0 kg/s?
1.20 x 102 kg/s2
7.0 x 102 kg/s2
4.2 x 10-1 kg/s?
1.3 x 103 kg/s?
Chapter 20 Solutions
Organic Chemistry - Standalone book
Ch. 20.1 - Prob. 1PCh. 20.2 - Prob. 2PCh. 20.3 - Prob. 3PCh. 20.4 - Prob. 4PCh. 20.5 - Prob. 5PCh. 20.8 - Prob. 6PCh. 20.8 - Prob. 7PCh. 20.8 - Prob. 8PCh. 20.9 - Prob. 9PCh. 20.9 - Prob. 10P
Ch. 20.9 - Prob. 11PCh. 20.9 - Prob. 12PCh. 20.10 - Prob. 13PCh. 20.10 - Prob. 14PCh. 20.11 - Prob. 15PCh. 20.11 - Prob. 16PCh. 20.11 - Prob. 17PCh. 20.12 - Prob. 18PCh. 20.12 - Prob. 19PCh. 20.12 - Prob. 20PCh. 20.12 - Prob. 21PCh. 20.13 - Prob. 22PCh. 20.13 - Prob. 23PCh. 20.14 - Prob. 24PCh. 20.15 - Prob. 25PCh. 20.16 - Prob. 26PCh. 20.17 - Prob. 27PCh. 20 - Prob. 28PCh. 20 - Prob. 29PCh. 20 - Prob. 30PCh. 20 - Write a structural formula for the principal...Ch. 20 - Prob. 32PCh. 20 - Prob. 33PCh. 20 - Prob. 34PCh. 20 - Prob. 35PCh. 20 - Prob. 36PCh. 20 - Prob. 37PCh. 20 - Prob. 38PCh. 20 - Prob. 39PCh. 20 - Prob. 40PCh. 20 - Prob. 41PCh. 20 - Prob. 42PCh. 20 - The preparation of the sex pheromone of the...Ch. 20 - Prob. 44PCh. 20 - Suggest a reasonable explanation for each of the...Ch. 20 - Prob. 46PCh. 20 - Prob. 47PCh. 20 - Prob. 48PCh. 20 - Prob. 49PCh. 20 - A compound has a molecular formula of C8H14O4, and...Ch. 20 - Prob. 51PCh. 20 - Prob. 52DSPCh. 20 - Prob. 53DSPCh. 20 - Prob. 54DSPCh. 20 - Prob. 55DSPCh. 20 - Prob. 56DSPCh. 20 - Thioesters Thioesters have the general formula ....Ch. 20 - Prob. 58DSP
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