Part A: Numerical Practice A student chemist was investigating the molar mass and pKa of an uknown weak acid. He weighed 4.5020 grams of the weak acid and dissolved it in 100.0 mL of distilled water. Using a standardized 1.00 M NaOH solution, 25.6 mL was required to titrate the weak acid solution to reach the stoichiometric point, where the solution turned from colorless to pink. Question A1: What is the significance of the stoichiometric point a.k.a. the equivalence point? More specifically, what happens during this particular point in the titration? (hint: It’s not about the color change) Question A2: Based on your answer in Question Al, calculate the molar mass of the unknown solid weak acid.