Chemistry 2430 Quiz #4 - 10 points - Dr. Howard Black - February 3, 1999 - Name KEY

1. (2 pts) Name the following molecule, being sure to address cis/trans or E/Z geometries where appropriate.
 

Z-4,5-dichloro- 2,6-dimethyl-2,4-octadiene

2. (3 pts) Draw an energy diagram in the box, starting from the "starting materials" (S.M.) line, which has the following features:

Note: There are many correct answers.  As long as the requirements were met (i.e., the overall line shape was correct), you received full credit.
 

a. the overall reaction is endothermic.

b. the reaction is two steps, i.e., has a reactive intermediate.

c. the second activation energy, Eact, is larger than the first.

3. (4 pts) Complete the following reactions. If more than one product is produced, draw only the major one.
 

 
4. (1 pt) In 20 words or less, please explain the difference between a reactive intermediate and a transition state.

A reactive intermediate has complete bonds, while transitions states have partial bonds.