1. What effect would you expect on the rate of reaction of ethanol with 2- iodo-2-methyl-butane if the concentration of the halide is tripled? 2. Explain the difference between addition, elimination and substitution reactions. 3. Optically active 2-butanol slowly racemizes on standing in dilute sulfuric acid. Propose a mechanism to account for this observation.

1. What effect would you expect on the rate of reaction of ethanol with 2- iodo-2-methyl-butane if the concentration of the halide is tripled? 2. Explain the difference between addition, elimination and substitution reactions. 3. Optically active 2-butanol slowly racemizes on standing in dilute sulfuric acid. Propose a mechanism to account for this observation.

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter9: Nucleophilic Substitution And Β-elimination

Section9.7: Experimental Evidence For E1 And E2 Mechanisms

Problem 9.7P

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Concept explainers

Aromatic Compounds

Aromatic organic compound or aromatic system is an important class of hydrocarbons under the branch of organic chemistry. Aromatic compounds are also called arenas. The definition of aromatic organic compounds can be stated as a class of organic compounds with a planar cyclic ring of atoms bonded through alternated single and double bonds. Due to these alternating bonds, a peculiar feature termed as ‘resonance’, that is, delocalization of pi electrons or the electrons is shared within the atoms of the ring which are present in the aromatic compounds. The word ‘aromatic’ includes a Greek word ‘aroma’ which means smell, indicating that they were named as such due to the sweet odor they produce. Many well-known flavors such as vanilla, cinnamon, and few scents from flowers are extracted from aromatic compounds. Benzene with chemical formula C6H6 is a very common aromatic compound that contains six atoms of carbon held in the cyclic ring of alternate double bonds. It is also to be noted that not all aromatic compounds contain benzene ring. This can be explained by Huckel’s rule.

Question

1. What effect would you expect on the rate of reaction of ethanol with 2-
iodo-2-methyl-butane if the concentration of the halide is tripled?

2. Explain the difference between addition, elimination and substitution
reactions.

3. Optically active 2-butanol slowly racemizes on standing in dilute sulfuric
acid. Propose a mechanism to account for this observation.

Definition Definition Study of the speed of chemical reactions and other factors that affect the rate of reaction. It also extends toward the mechanism involved in the reaction.

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