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 à 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.