Molecular Weight or its related value, Equivalent Weight, Formula Weight or Empirical Formula Weight is an important fundamental property of each molecule.

How many ways are there to determine a Molecular, Equivalent or Empirical Formula Weight? How many methods have you actually used?

Here is a partial list of methods. You have used almost all of these in this course (General Chemistry Laboratory, Chem 113-114). You should recognize all of them and may even come up with an additional few of the many, many more.

  1. Colligative Properties
  2. Elemental Analysis
  3. Gas Laws
  4. Solution Stoichiometry
  5. Calorimetry