1. A^- is neutral anion (in terms of its basicity) and B^- a weak base. What can you say about HA and HB? HA is a ____________ and HB is a _____________.

a) weak acid, weak acid b) strong acid, neutral c) strong acid, weak acid d) neutral, strong acid e) none of these.

2. [NaOH] = .002 M; pH = ____________________

a) 2.7 b) 10.3 c) 12.3 d) 11.3 e) 3.3

3. 1.0 mL of 0.10 M HCl mixed with 100 mL of H₂O; pH = ________.  

5-10. Will 0.1 M solutions of the following be :

a) acidic, b) basic, or c) neutral.

5. NaOAc 6. NH₄Cl 7.Mixture of NH₃, NH₄Cl 8. AcOH 9. KCl 10. MeOH

11. What is the [H⁺] of a 0.15 M solution of HA that has an acid dissociation constant of K_a = 4.7x10^-8?

12. What is the pH of a 0.05 M ammonia solution. (K_b = 1.8x10^-5).

13. What is the pH of a 0.04 M solution of Na CN?