CHEM 1310Recitation Week 15Fall 20141. Calculate [OH-] at 25C for each of the following solutions and determine whether the solution is acidic, basic, or neutral.A. 0.0000759 M HClO4B. 1.78 x 10-3 M HCl

2. Calculate the pH, the pOH, and and the [OH-] for a solution of 0.037 M HBr.

3. Problem Manipulation Methodology: What is the pH of a 0.10 M NH3 solution? The Ka of NH4+ is 5.56e-10.

4. The pH of a 0.129 M solution of a weak acid, HA, is 2.34. What is Ka for the weak acid?

5. Summary Problem: The ionization constant of a very weak acid, HA, is 4.0 109. Calculate the equilibrium concentrations of H3O+, A, and HA in a 0.040 M solution of the acid.