Organic Chemistry
Organic Chemistry
3rd Edition
ISBN: 9781119316152
Author: Klein, David R.
Publisher: WILEY
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Chapter 17.5, Problem 10CC
Interpretation Introduction

Interpretation For the given compounds, it should be checked whether the compound will be aromatic, nonaromatic or anti aromatic

Concept introduction:

  • The conditions for aromatic compound are,
    1. 1. It should be planar
    2. 2. It must obey the Huckel’s rule

The requirement of an odd number of electron pair is called Huckel’s rule. A     compound can only be aromatic if the number of π electron in the ring is 2, 6,10,14,18 and so on. This series of number can be expressed mathematically as 4n+2 , where n should be an integer and the compound is aromatic.

  1. 3. Continuous conjugated π system(all carbon should be in sp2 hybridized state)
  • The conditions for non-aromatic compound is

The compound not either planar or cyclic but it must satisfy the Huckel’s                         rule

  • The conditions for anti-aromatic compound is

    It satisfy all the conditions except Huckel’s rule in the conditions of aromaticity

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3. Propose a synthesis for the following transformation. Do not draw an arrow-pushing mechanism below, but make sure to draw the product of each proposed step (3 points). CN + En CN
3) Propagation of uncertainty. Every measurement has uncertainty. In this problem, we'll evaluate the uncertainty in every step of a titration of potassium hydrogen phthalate (a common acid used in titrations, abbreviated KHP, formula CsH5KO4) with NaOH of an unknown concentration. The calculation that ultimately needs to be carried out is: concentration NaOH 1000 x mass KHP × purity KHP molar mass KHP x volume NaOH Measurements: a) You use a balance to weigh 0.3992 g of KHP. The uncertainty is ±0.15 mg (0.00015 g). b) You use a buret to slowly add NaOH to the KHP until it reaches the endpoint. It takes 18.73 mL of NaOH. The uncertainty of the burst is 0.03 mL.. c) The manufacturer states the purity of KHP is 100%±0.05%. d) Even though we don't think much about them, molar masses have uncertainty as well. The uncertainty comes from the distribution of isotopes, rather than random measurement error. The uncertainty in the elements composing KHP are: a. Carbon: b. Hydrogen: ±0.0008…
Don't used hand raiting and don't used Ai solution

Chapter 17 Solutions

Organic Chemistry

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