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.