Electrolytes Worksheet
1.  What is an electrolyte? What is a nonelectrolyte? 
2.  Define dissociation as it applies to ionic compounds that dissolve in water. What does hydration mean? 
3. Write equations for the dissocation of the following ionic compounds in water: 

(a) LiCl, (b) BaCl2, (c) Al(C2H3O2)3, (d) (NH4)2CO3, (e) FeCl3
4. Write equations for the dissocation of the following ionic compounds in water: 

(a) CuSO4, (b) Al2(SO4)3, (c) CrCl3, (d) (NH4)2HPO4, (e) KMnO4
5. Write chemical equations that show what happens when these solid ionic compounds dissolve in water:

(a) MgCl2 (b) Al(NO3)2 (c) Na2CO3 (d) (NH4)2SO4
6. What is the difference between a strong electrolyte and a weak electrolyte? Formic acid, HCHO2, is a weak acid. Write a chemical equation showing its reaction with water.
7. Write an equation showing the reaction of water with itself for form ions. 
8. What is the apparent degree of dissociation of a solution prepared by dissolving 0.0500 mole of Ca(NO3)2 is 500 g of water if the solution behaves as if only 0.0785 mole of solute had dissociated?
9. If a 0.5 M solution of BaI2 is totally dissociated into Ba2+ ions and I- ions, what is the molar concentration of each ion?
10. One hundred mL of 0.40 M HNO3 is mixed with 400 mL of 0.50 M Ca(NO3)2. Assume both compounds are 100 percent dissociated. Find the concentration of these ions in solution.

a) H+ (H3O+),    b) Ca2+,      c) NO3-
11.  How many mg of metallic ions are in 1.0 mL of these solutions? 

a) 0.10 M LiNO3,    b) 0.20 M CuSO4.5H2O,   c) 0.50 M Al(NO3)3.
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