CHM 2210C Chapter 5 Sample Exam

 

Chapter 5 Part M_2: Electrophilic Addition Mechanism Example 10 points

 

The mechanism for the electrophilic addition of HX to an alkene has been established as a two steap reaction sequence. Demonstrate this mechanism by showing both steps in this mechanism using HBr and Ethene at room Temperature. Show curved arrows in the Polar Reaction Mechanism

 

C2H4 + HBr CH2BrCH3

 

a.   Step #1:

 

 

 

 

 

 

 

b.   Step #2:

 

 

 

 

 

 

Is there a carbocation reaction intermediate formed in this mechanism? (If so label it in the above mechanism)

 

In the above label each reactant and product in the two steps as either a nucleophile or and electrophile.