17. You analyze for pyridine ( ) by dissolving 0.1000 g of the complex in
100 mL of H2O and titrating with a 0.01 M HCI solution. Which of the following indicators
should be used to detect the endpoint? (Assume that the initial concentration of pyridine is
approximately 0.01 M.)
(A) thymol blue, pH range of color change = 8.0-9.6
(B) methyl red, pH range of color change = 4.8-6.0
(C) bromophenol blue, pH range of color change = 3.0-4.6
(D) bromothymol blue, pH range of color change = 6.0-7.6
(E) alizarin yellow, pH range of color change = 10.1-12.0