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Chapter 8: Q. 8-8-66E-b (page 262)

How would you distinguish between the following pairs of compounds using simple chemical tests? Tell what you would do and what you would see.

(b) 2-Hexene and benzene

Short Answer

Expert verified

2-Hexene shows reaction withBr2/CCl4and also shows decolorization, but benzene does not show a reactionBr2/CCl4

Step by step solution

01

Reaction of 2-Hexene with  Br2/CCl4

2-Hexene is an unsaturated compound due to the presence of a double bond hence on reaction with Br2/CCl4 show bromination.It forms 1,2 diol and shows decolorization.

02

Reaction of benzene with Br2/CCl4

Benzene is the aromatic compound that only show bromination in the presence of FeCl3/AlCl3 which provide the Br electrophile to the benzene for bromination. Hence, no reaction occurs.

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Most popular questions from this chapter

Iodine azide, adds to alkenes by an electrophilic mechanism similar to that of bromine. If a monosubstituted alkene such as 1-butene isused, only one product results:

a) Add lone-pair electrons to the structure shown for, and draw a

second resonance form for the molecule.

Which of the reactions below would result in a product mixture thatwould rotate plane-polarized light?

c)

What alkenes might be used to prepare the following alcohols by hydroboration-oxidation?

Reaction of 2-methylpropene with CH3OH in the presence of H2SO4

catalyst yields methyl tert-butyl ether, CH3OC(CH3)3, by a mechanism

analogous to that of acid-catalyzed alkene hydration. Write the mechanism,

using curved arrows for each step.

From what alkenes might the following alcohols have been prepared?

a)
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