A weak acid HA (pKa 5.00) was titrated with 1.00 M KOH. The acid solution had a volume of 100.0 mL and a molarity of 0.100 M. Find the pH at the following volumes of base added and make a graph of pH versus Vb: Vb 0, 1, 5, 9, 9.9, 10, 10.1, and 12 mL.