Question 1
The difference between temporary hard water and permanent hard water is that only the former contains a significant concentration of:
◦ Ca
2+ ◦ CO
32- ◦ HCO
3- ◦ Mg
2+ ◦ OH
- Question 2
The
Ka for boric acid is 5.6 × 10
-10. What is the pH for 0.10 M sodium borate?
◦ 8.87
◦ 5.13
◦ 5.75
◦ 2.87
◦ 11.13