Chapter 3.4, Problem 3.5TIY

(a)

Interpretation Introduction

Interpretation: Overall equation and the propagation steps of the mechanism for the chlorination of chloromethane to furnish dichloromethane should be written.

Concept introduction: The monochlorination performed with ultraviolet light proceeds via radical chain mechanism. Chlorine transforms ${\text{CH}}_{\text{4}}$ into chloromethane as the major halogenated product with variety of side products due to various possibility of chain termination. The chloromethane formed can undergo another cycle of radical mechanism to yield dichloromethane

The fundamental radical chain mechanism is summarized in the illustration as follows:

  

(b)

Interpretation Introduction

Interpretation: The formation of small amount of ethane in chlorination of methane should be determined.

Concept introduction: The monochlorination performed with ultraviolet light proceeds via radical chain mechanism. Chlorinetransforms ${\text{CH}}_{\text{4}}$ into chloromethane as the major halogenated product with variety of side products due to various possibility of chain termination.

The fundamental radical chain mechanism is summarized in the illustration as follows: