65. What is [OH-] if the pH is 12.6 (A) 0.004 M (B) 0.04 M (C) 0.4 M (D) 0.0004 M A 0.25M solution of ethanoic acid is found to be 1.30% ionized. Answer the next two questions with the information:
66. What is the pH of the solution? (A) 1,02 (B) 1.28 (C) 12.8 (D) 0.12
67. What is the dissociation constant of the acid? (A) 0.052
(B) 0.198 (C) 0.0136 (D) 0.025​