Concentrations Assignment       Name ______________________

Work these concentration problems:

  1. What is the molality of a solution consisting of 45 g of MgCl2
    dissolved in 620 g of H2O?

     

     

     

  2. What is the mole fraction of ethanol in a solution made of 92 g of C2H5OH
    and 144 g of H2O?

     

     

     

  3. What is the mole fraction of H2O in question #2?

     

     

     

  4. What is the mass percent of ethanol in question #2?

     

     

     

  5. What is the normality of a 2 M solution of H3PO4?