If a solution has a pH = 9.6, the [H*] is a. 2.5 x 10 M b. 9.6 M c. 2.5 M d. 2.5 x 10-10 M e. 9.6 10-10 M What is the pH of an acetic acid solution where the concentration of acetic acid is 2 mM and the concentration of sodium acetate is 20 mM. The pK, of acetic acid is 4.76. a. 5.76 c. 12.6 b. 10.6 d. 8.8 e. 4.76 The ion product constant for water (Kw) is equal to: a. 1014 b. 107 c. 100 d. 10-7 e. 10-14 Which substance would be the best buffer at pH 8 if it had to be able to buffer against either acid or base? a. one with a pKa of 7 b. one with a pka of 8 c. one with a pka of 9 d. The pka of a substance doesn't tell you whether it would be a good buffer at this pH. What volume in milliliters, of 2.0% (m/v) KOH solution can be prepared by diluting 75.0 mL of a 8% (m/v) KOH solution? A. 100 mL B. 200 mL C. 300 mL E. 500 mL D. 400 mL