CHM 2046C Module Nine Sample Exam

 

Part C: Free Radical Mechanism Example 10 points

 

The free radical mechanism for the halogenation of alkane has been established as a chain reaction. Demonstrate this mechanism by showing all four steps in this mechanism using Methane and Bromine in Ultraviolet Light

 

CH4 + Br2 + uv light CH3Br + HBr

 

a.   Chain initiation step:

 

 

 

 

b.   Chain Propogation Steps

 

 

 

 

 

 

 

 

 

 

c.   Chain Termination Steps:

 

 

 

 

 

 

 

 

 

 

d. What evidences did the chemist record which lead to this suggested mechanism?