Chemistry Molar Concentration and Colligative Properties Worksheet


  1. A solution was prepared by dissolving 10.0 g K3PO4 in a solution with a total volume of 250.0 mL. What is the molar concentration (molarity) of this solution?



  1. How many mL of a 0.100 M Ca(NO3)2 solution are needed to provide 0.500 g of Ca(NO3)2 ?



  1. Calculate the osmolarity (osm/L) of each of the following solutions:
  2. 0.25 M CH3CH2OH
  3. 0.45 M (NH4)2CO3
  4. 0.60 M KOH


  1. True or False. A 0.24 M NaCl solution will have the same colligative properties as a 0.16 M CaBr2 solution.


  1. For each pair, which one of the two solutions is expected to have the higher boiling point?
  2. 0.10 M C6H12O6 vs. 0.050 M Mg(NO3)2
  3. 0.25 osm/L CuSO4 vs. 0.20 M LiF


  1. True or False. In osmosis, solvent molecules (e.g., water) pass through a semipermeable membrane from the solution of higher osmolarity to the solution of lower osmolarity.


  1. True or False. An irreversible reaction goes both ways.
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