1. (2 points each) Complete each of the following substitution reactions by writing the product expected. Indicate the expected stereochemistry if it would be specific. Also indicate the mechanism that would be most likely to be followed.
a) 
b) 
c) 
2. (2 points each) Describe and illustrate what is meant by the terms below. Select an appropriate reaction to use as an example.
a) anti periplanar
b) inversion of stereochemistry