2. Morphine is a weak base with a pk, of 5.80. a) If 25.0 mL of a 0.0700 M morphine solution is titrated with 0.100M hydrochloric acid, what will the pH of the solution be at the equivalence point? b) What will the pH of the solution be at the half-equivalence point? c) Which of the following indicators would be most appropriate for this titration? Explain your choice in 1-2 sentences. Indicator Ka 2,4-Dinitrophenol 7.7 x 105 Bromothymol Blue 7.9 x 108 Phenolphthalein 4.0 x 10-10 d) Make a rough sketch of the titration curve. Don't forget to label your axes and clearly indicate the buffer region and the equivalence point.