Recommended Problems
I believe there are very few problems to be done that you would not derive some benefit from. What I have done in the following list are to pick problems that I feel depict particularly significant concepts, or are very similar to the way in which I ask questions.  This list, however, represents the minimum problems you should do.  Remember that one of the things I told you the first day of class is that one of the ways to do well in chemistry is to work lots of problems.

Book problems (answers to odd-numbered questions in back of book)
  Chapter  12:  7, 11a, 13, 19, 23, 27, 31, 47, 55, 65, 71
  Chapter  13:   7, 11, 13, 17, 19, 31, 35, 45, 49, 5163
  Chapter  14:   7, 11, 17, 33, 35, 37, 45, 49, 69, 73, 91
  Chapter  15:  1, 5, 11, 15, 21, 27, 39, 43, 45, 47, 55, 57, 61, 69
  Chapter  16:   3, 9b, 11, 33, 41, 55, 61, 73, 77, 79
  Chapter  17:  3, 7, 15, 37, 67, 73, 79, 83
  Chapter  18:  ,
  Chapter  19: 
  Chapter  20: