1) Identify each of the following as a strong electrolyte, a weak electrolyte or a nonelectrolyte, based on its behavior when dissolved in water.

a) BaCl2 (s) yields (dissolved in water) Ba2+ (aq) + 2Cl- (aq)

b) HOCH2CH2OH (l) yields (dissolved in water) HOCH2CH2OH (aq)

c) HCOOH (aq) + H2O (l) Double arrow H3O+ (aq) + HCOO- (aq)

d) HClO4 (l) + H2O (l) yields (dissolved in water) H3O+ (aq) + ClO4- (aq)

2) Write formulas for the major species in the water solution of each compound. If the compound does not ionize, write as given. If more than one species, separate by commas. Do not write coeffients with ions.

Compound	Type	Major Species
HCl	strong electrolyte
CH3COOH	weak electrolyte
(NH2)2CO	nonelectrolyte
Ca(OH)2	strong electrolyte