Written Assignment 5: Chemical Reactions In Solution

Written Assignment 5: Chemical Reactions in Solution

Answer all assigned questions and problems, and show all work. 

1. Define electrolyte and nonelectrolyte and identify each of the following substances as a strong electrolyte, weak electrolyte, or nonelectrolyte: (5 points)(Reference: Chang 4.9)

2. Write ionic and net ionic equations for the following reactions: (8 points)

a. AgNO3 + Na2SO4 →

b. BaCl2 + ZnSO4 →

c. (NH4)2CO3 + CaCl2  →

d. NaNO3 + KCl  →
(Reference: Chang 4.21)

3. With reference to Table 4.2, suggest one method by which you might separate (a) K+ from Ag+, (b) Ba2+ from Pb2+, (c) NH4+ from Ca2+, and (d) Ba2+ from Cu2+. All cations are assumed to be in aqueous solution, and the common anion is the nitrate ion. (8 points)(Reference: Chang 4.24)

4. Give the oxidation number of the underlined atoms in the following molecules and ions: (7 points)

1. ClF
2. IF7 -       
3. CH4 –       
4. C2H2- 
5. C2H4-       
6. K2CrO4 -       
7. K2Cr2O7       - 
8. KMnO4 -       
9. NaHCO3 -       
10. O2 -       
11. NaIO3 -       
12. K2O -       
13. PF6 -       
14. AuCl4 -