What is the buffer capacity of 100 mL of 0.1 M HClO2 and 100 mL of 0.2 M NaClO2?
1. 0.1 mol of OH- and 0.2 mol of H+
2. 0.2 mol of OH- and 0.1 mol of H+
3. 10 mol of OH- and 20 mol of H+
4. 0.01 mol of OH- and 0.02 mol of H+
5. 0.02 mol of OH- and 0.01 mol of H+
50.0 mL of an HCl solution with a pH of 3.5 neutralizes 200.0 mL of a Ca(OH)2 solution.What is the molarity of the Ca(OH)2 solution?
1. 14.3 M
2. 1.78 × 10-4 M
3. 1.69 M
5. 2.11 × 10-5 M
6. 4.55 × 10-6 M
7. 3.95 × 10-5 M
8. 0.0342 M
1. An advantage of organic fertilization over chemical fertilization is that they
a. are more natural
b. release their nutirents over a longer priod of time and are less likely to lost to runoff.
c. provide nutrients in the forms most readily absorbed by plants
d. are easier to mass...