Which of the indicators in Fig. 14‑8 could be used for the titrations of the following:
•For the titration of 25.0 mL of 0.100 M propanoic acid (HC3H5O2, Ka = 1.3 x 10-5) with 0.100 M NaOH.
•For the titration of 25.0 mL of 0.100 M pyridine with 0.100 M hydrochloric acid (Kb for pyridine is 1.7 x 10-9).
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