試卷名稱:107年 - 物理及化學#86559
年份:107年
科目:學士後西醫物理及化學
78. An unknown concentration of NH3 solution is titrated by HCl solution. The color change for indicators at different pH values
are shown in the table below. Which of the following indicators is the best for this titration?
(A) phenolphthalein
(B) alizarine yellow R
(C) methyl red
(D) crystal violet
(E) thymol blue