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Chapter 6: Q27E (page 181)

Draw the electron-pushing mechanism for each radical reaction below. Identify each step as initiation, propagation, or termination.

(a)

b)

c)

Short Answer

Expert verified

a.

b.

c.

Step by step solution

01

Free radical reaction

The reaction which involves free radicals is called a free radical reaction.

The free radical reaction is completed in three-step. The first step of the reaction is an initiation then the second step is propagation and the third step is termination.

02

Mechanism of reaction free radical reaction

Initiation Step:

Radical reactions are initiated by light. The reaction is also initiated by UV light. In the first stepCl-Clbond break, homolytically and Clfree radical is formed. Also, cyclopentane and hydrogen-free radicals form by breaking the C-Hbond of the cyclopentane ring.

Propagation step:

In this step, the radicals which are generated in the initiation step collide with each other and new radicals are generated.

Termination step:

When two free radicals collide with each other then the chain is terminated.

03

Free radical reactions

a.

mechanism

Mechanism of Reaction a

b.

mechanism

c.

mechanism

Mechanism of Reaction c

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