7 1 point The 1/2 equivalence point is defined as the point at which 1/2 of the volume needed to reach the equivalence point has been added in a weak acid or weak base titration. Also at the 1/2 equivalence point, the pH pka of the weak acid or weak base lp log). When titrating acetic acid with potassium Hydroxide, it took 19.24 mL of KOH to reach the equivalence point where the pH was determined to be 8.58. The volume needed to reach the 1/2 equivalence point is 9.62 ml. If the pH at the 1/2 equivalence point is 4.19, the Kawould be type your answer x 10 type your answer (Note: the coefficient, the first number should have 2 significant figures.)