Following is ¹H-NMR of compound A . Compound A is comprised of H. C and O atoms. • In mass spectrum, overall m/z of the compound was 130 and the relative intensity of [M+1] peak was 7.0% when compared to [M] peak 13C-NMR signals at 14.1, 30.3, 50.0, 61.0, 168.1. 200.4. • IHD (index of hydrogen deficiency) - 2. Compound A was confirmed to react with methyl lithium. How many equivalents of methyl lithium do you predict the compound A to react with? . 5 02 0.32 answer not in the given choices 01 0.28 PPM 0.48 -2 0.46

Following is ¹H-NMR of compound A . Compound A is comprised of H. C and O atoms. • In mass spectrum, overall m/z of the compound was 130 and the relative intensity of [M+1] peak was 7.0% when compared to [M] peak 13C-NMR signals at 14.1, 30.3, 50.0, 61.0, 168.1. 200.4. • IHD (index of hydrogen deficiency) - 2. Compound A was confirmed to react with methyl lithium. How many equivalents of methyl lithium do you predict the compound A to react with? . 5 02 0.32 answer not in the given choices 01 0.28 PPM 0.48 -2 0.46

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

QUESTION 21 Elemental analysis determined an unknown compound to contain 40.0 % carbon, 6.7 % hydrogen. The unknown compound had an M+ = 60 m/z; three key IR absorbances: strong at 1710, strong below 3000, and broad from 2500 to 3500. The proton NMR showed an absorbance at 1.7 ppm (lowest whole number ratio of H =3), and an absorbance at 11.5 ppm (lowest whole number ratio of H = 1). The compound was able to turn blue litmus paper red, and neutralize a base. What is this compound? %3D O CH3CO2H O Formaldehyde О но C = CH2 %3D НО O CH2(OH)CHO O CH(OH)=CH(OH)
3. 15.25 In the mass spectrum of the product of the following reaction, the base peak appears at m/z = 57. Explain this outcome. OH conc HCI ?
A compound gives a mass spectrum with essentially only three peaks at m/z = 77 (40%), 112 (100%), and 114 (33%). Identify the compound.
QUESTION 14 The mass spectrum for Compound X is found to have signals at the following m/z values. Relative intensity (%) 100- 80- 60- 40 20. 0 10 Compound X is (A) butanal. (B) butanol. (C) butanone. (D) butanoic acid. 20 30 Mass spectrum 40 m/z 50 60 70 80
The following is a mass spectrum of octane. 100 Relative Intensity 80 60 40 20 0 10 20 30 40 50 60 x Incorrect. m/z 70 80 90 100 110 Which peak represents the molecular ion? The molecular ion peak is expected to appear at m/z = amu.
Which of the following compounds appears in the mass spectrum to have a baseline peak at m/z=43, indicating the reason OH B OH OH C D
Identify an unknown compound with the following mass spectrum data: M* at m/z of 106, intensity of 82.0 (M+1)* at m/z of 107, intensity of 4.5 (M+2)* at m/z of 108, intensity of 25.9 O CSH11C O CH3Br O C3H7C1 C2H5Br O C2H5CI
Which compound correlates to the following mass spectrum? 100 80 20 50 75 100 125 150 m/z Relative htensity
The low-resolution mass spectrum of an unknown analgesic X had a molecular ion of 151. Possible molecular formulas include C7H5NO3, C8H9NO2, and C10H17N. High-resolution mass spectrometry gave an exact mass of 151.0640. What is the molecular formula of X?
The Mass spec of the compound has a molecular ion peak at m/z = 178 and a base peak at m/z = 178 (yes, the same value). The proton NMR showed the following: Signal Shift (ppm) Integration 8.4 8.0 7.4 A B C There are four C-13 signals: 125, 126, 128, and 132 ppm. A simple C13 chart is provided at the The integrations for the four C13 peaks are 2:2:1:2 respectively. The IR Spectrum is presented below (black vertical line at 3000 cm³¹ was drawn in): INFRARED SPECTRUM 0.8 0.6 0.4 Splitting Singlet 1 Doublet 2 Doublet of Doublets 2 C. 2000 Wavenumber (cm-1) Other information available: The molecule does not react with bromine in chloroform but can be brominated using bromine and FeBr3, and three different monobromo products are obtained. a. The number of H's in the compound have to be a multiple of what integer? Explain your answer. b. The number of C's in the compound have to be a multiple of what integer? is the maximum number of C's that can be in the compound? determined the maximum…
5. The mass spectrum of an unknown compound shows a molecular ion peak at m/z 119, with a relative intensity of 39. The M + 1 peak has a relative intensity of 1 and the M + 2 peak has a relative intensity of 38. A major IR stretch for the compound is observed at 2253 cm³¹. Additionally, the following ratio of elements was observed following elemental analysis: 20.03% C, 1.68% H, and 11.68% N. Provide a reasonable molecular formula and a structure for the unknown.
The mass spectrum for acetophenone is shown below. a) Where does the molecular ion show up? ?) b) Which peak is the base peak? ? 1) The mass spectrum for acetophenone is shown below. Relative Intensity 100- 80- 20- acetophenone 0-tyttim 20 10 30 40 50 60 77 trommlilily 70 m/z 80 90 100 105 Ć 110 120 120 a) Where does the molecular ion show up? (m/z = ?) b) Which peak is the base peak? (m/z = ?) c) Draw the structure of the charged species responsible for the peak at m/z = 120. d) Draw the structure of the charged species responsible for the peak at m/z = 105. e) Draw the structure of the charged species responsible for the peak at m/z = 77.