uinine is a weak base, with pKb =5.10. What is the pH if a 25.0mL solution originally containing 0.125moles of quinine is treated with HCI to the equivalence point, and if the combined total volume at the end is 56.0mL? O a. None of the above Ob.4.92 O c.8.72 O d.7.98 Oe. 5.10