1) What mass (in grams) of potassium acetate, KC 2 H 3 O 2 , must be added to 132 mL of 0.010 M acetic acid to form a buffer solution with a pH of

1) What mass (in grams) of potassium acetate, KC2H3O2, must be added to 132 mL of 0.010 M acetic acid to form a buffer solution with a pH of 5.06?  

            (Ka (HC2H3O2)= 1.8 x 10-5

2) 11 mL of 0.0100 M NaOH are added to 25.0 mL of 0.0100 M acetic acid. What is the pH of the resulting solution?

3) 14 mL of 0.010 M NaOH are added to 29 mL of water. Determine the pH of the resulting solution.

4) 12 mL of 0.0100 M HCl are added to 25.0 mL of a buffer solution that is 0.010 M HC2H3O2 and 0.09 M C2H3O2-.  What is the pH of the resulting solution?