12. What is the pH of 1.0 M Ba(OH)2?
13. What is the pH of 1.0 M RbOH?
14. Calculate the pH of 0.20 M aniline(aq). The Kb for aniline is = 4.3 x 10-10
15. If the [OH-] = 10-3 M, the pH of the solution is
16. If the pH of an aqueous solution is 4, what is the hydroxide ion concentration?
17. If the percentage ionization of 0.100 M solution of a weak acid, HA, is 4.0, the pH of the
solution is ?
18. Calculate the pH of 0.01 M acid, HA whose Ka = 1.0 x 10-10?
19. What is the pH of 1.0 M HClO4 (aq) ?
20.Consider the equilibrium: HCOOH(aq) + F-(aq) <----> HCOO-(aq) + HF (aq)
Given that the Ka of HCOOH = 1.8 x 10-4 and the Ka of HF = 6.8 x 10-4, calculate the equilibrium constant and predict whether the equilibrium favors reactants or products.