Fumaric acid and malonic acid are both diprotic acids. a. Sketch the general shape of the curve for a diprotic acid with Ka1 >> Ka2. Explain how to determine pKa1, pKa2, and the molecular weight. b. Sketch the general shape of the curve for a diprotic acid with Ka1 ≈ Ka2. c. Sketch the general shape of a curve for a triprotic acid with Ka1 >> Ka2 >> Ka3.