11,12,13 poihts.Calculate the standard refractive index.11. An unknown sample is being submitted for elemental analysis. The follow-ing results are obtained: 72.4 % C, 13.8 % H and 0 % N. Knowing that thesample's molecular weight is 116, what is the molecular formula of this com-pound? Propose a structure.melting119e up) be-ts.12. You have two samples: one is known to be acetophenone, while the other oneis 1-phenylethanol. How would you know which one is which using infraredspectroscopy?HO,13. Luis A. reacted cyclohexene with H, in the presence of a Pd catalyst. Howcould Luis follow the reaction using IR?Boilingpoint14. Esterification of acetic acid with isopentanol in acidic conditions led to aliquid. Two carbonyl peaks are observed in IR: a large peak at 1730 cm-1, witha smaller peak at 1715 cm-1. Explain.15. How would you decide which compound is which using only IR spectroscopy?Benzoic acid and acetophenoneb. Ethyl methyl ether and propanol. Acetophenone and benzaldehyded. 2-Cyanobutane and 2-methylbutanoic acidPhenol and cyclohexanola.e.elemental analysis. The IR spectrum of her sample shows peaks at 3028, 1710(strong), 1600 (sharp), and 1377 cm-1.16. Z. a with as shown by

11. Given : Percent composition of C = 72.4 % Percent composition of H = 13.8 % Percent…

11. An unknown sample is being submitted for elemental analysis. The follow- ing results are obtained: 72.4 % C, 13.8 % H and 0 % N. Knowing that the sample's molecular weight is 116, what is the molecular formula of this com- pound? Propose a structure.

11. An unknown sample is being submitted for elemental analysis. The follow- ing results are obtained: 72.4 % C, 13.8 % H and 0 % N. Knowing that the sample's molecular weight is 116, what is the molecular formula of this com- pound? Propose a structure.

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...

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Question

11,12,13

poihts.
Calculate the standard refractive index.
11. An unknown sample is being submitted for elemental analysis. The follow-
ing results are obtained: 72.4 % C, 13.8 % H and 0 % N. Knowing that the
sample's molecular weight is 116, what is the molecular formula of this com-
pound? Propose a structure.
melting
119
e up) be-
ts.
12. You have two samples: one is known to be acetophenone, while the other one
is 1-phenylethanol. How would you know which one is which using infrared
spectroscopy?
HO,
13. Luis A. reacted cyclohexene with H, in the presence of a Pd catalyst. How
could Luis follow the reaction using IR?
Boiling
point
14. Esterification of acetic acid with isopentanol in acidic conditions led to a
liquid. Two carbonyl peaks are observed in IR: a large peak at 1730 cm-1, with
a smaller peak at 1715 cm-1. Explain.
15. How would you decide which compound is which using only IR spectroscopy?
Benzoic acid and acetophenone
b. Ethyl methyl ether and propanol
. Acetophenone and benzaldehyde
d. 2-Cyanobutane and 2-methylbutanoic acid
Phenol and cyclohexanol
a.
e.
elemental analysis. The IR spectrum of her sample shows peaks at 3028, 1710
(strong), 1600 (sharp), and 1377 cm-1.
16. Z. a with as shown by

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