CHAPTER 14  Colligative Properties 

  Name________________________________________________________pd __________

1.  Determine which of the following solutions are soluble according to the solubility rules.  Write the formula of the salt and the “i” value of the soluble ones.

 a. Potassium Chloride  ________________________

 b. Lead (II) Sulfide __________________________

 c. Sodium Carbonate ___________________________

 d. Barium Sulfate _____________________________

 e. Silver Nitrate _____________________________

 f. Zinc Hydroxide _____________________________
  *Why were you not asked to find the “i” values of the insoluble salts?

2.  Calculate the freezing point and boiling point of a solution which contains 250 .0 g or KCl in 1000.0 grams of water.  Kfp= 1.86oC/m, Kbp= .512oC/m.

3. Calculate the freezing point and boiling point of a solution which contains 250.0 g of Sodium Carbonate in 1250.0 grams of water.  Kfp= 1.86oC/m,  Kbp= .512oC/m.

4. Write balanced equations for the following double replacement reactions.  Then determine if a precipitate will form.  Mark each compound as (aq) or (s).
 a. Sodium Phosphate + Silver Nitrate -->

 
 b. Lead (II) Nitrate + Potassium Sulfide -->

 c. Ba(NO3)2  +  K2CO3 --->

 d. KNO3  +  LiCl ---->

 
5. Phosphoric Acid (H3PO4) has a stock concentration of 16.0 M.

 a. Calculate the volume of stock acid needed to make 2.25 dm3 of .750M phosphoric acid

 b. Suppose you have 1.5 liters of stock phosphoric acid.   Calculate the volume of 2.0M phosphoric acid you can make.