1. Vocab
2. Write the dissociation equation and calculate the van't Hoff factor of the following substances
a. Fe(NO3)3 (s)
Fe3+ + 3NO3-
i=4
b. Al2(SO4)3 (s)
2Al3+ + 3SO42-
i=5
c. nickel (II) sulfate
NiSO4 (s)
Ni2+ + SO42-
i=2
d. sodium phosphate
Na3PO4 (s)
3Na+ + PO43-
i=4
e. glucose (C6H12O6)
C6H12O6 (s)
C6H12O6 (aq)
i=1
3.
Polar, Nonpolar or
Ionic?
Soluble in Water or
Carbon
tetrachloride?
BaCl2
Ionic
Water
HI
Polar
Water
Cl2
Nonpolar
Carbon tetrachloride
Formula
Lewis Structure
4. How many grams of potassium nitrate can dissolve in 300 grams of water at 40 °C?
Answer:__195 g KNO3____
5. 110 grams of sodium nitrate are dissolved in 100 grams of water at 45 °C. If the solution is cooled to 10 OC, how
many grams of salt will precipitate out of solution?
Answer:__30 g NaNO3 will precipitate out_____
6. 60 grams of ammonium chloride are dissolved in 100 grams of water at 90°C. What temperature must the
solution be cooled to produce a saturated solution?
Answer:__66oC___
7. Honors Solubility Rules
Are the following compounds soluble (S) or insoluble (I)?
a. MgCl2 __S____ b. Mn(ClO3)2 __S__ c. Sr3(PO4)2 __I___ d. Ca(OH)2 __S___ e. Mg(NO3)2 __S____ f. CuCrO4 _I____
g. Na2CO3 ___S___
8. Write the balanced molecular, complete ionic and net ion equation for the following reactions. Be sure to
include states of matter for each product.
a. ____AgNO3 (aq) + ____KI (aq) 
Complete ionic:
KNO3 (aq) + AgI (s)
Ag+ + NO3- + K+ + I-  K+ + NO3- + AgI (s)
Net ionic: Ag+ + I-  AgI (s)
b. __2__LiOH (aq) + ____MgSO4 (aq)  Li2SO4 (aq) + Mg(OH)2 (s)
Complete ionic: 2Li+ + 2 OH- + Mg2+ + SO42-  2Li+ + SO42- + Mg(OH)2 (s)
Net ionic: Mg2+ + 2 OH-  Mg(OH)2 (s)
c. __3__Pb(C2H3O2)2 (aq) + __2__ (NH4)3PO4 (aq)  Pb3(PO4)2 (s) + 6 NH4C2H3O2 (aq)
Complete ionic: 3Pb2+ + 6C2H3O2- + 6 NH4+ + 2PO43-  Pb3(PO4)2 (s) + 6 NH4+ + 6 C2H3O2Net ionic: 3Pb2+
+ 2PO43-  Pb3(PO4)2 (s)
9. Calculate the freezing point of a solution containing 0.600kg of CHCl 3 and 42.0g of eucalyptol, C10H18O, a fragrant
substance found in leaves of eucalyptus trees. The freezing point of pure CHCl 3 is -63.5oC and has a Kf of 4.68oC/m.
12. 50.0mL of 16M hydrochloric acid are taken from the stock room and diluted with water to make a 2.0L
solution. What is the molarity of the final solution?