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試卷名稱：110年 - 110台灣聯合大學系統_碩士班招生考試_化學類:綜合化學#104938
年份：110年
科目：研究所、轉學考(插大)◆綜合化學
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