3.以酸鹼滴定分析1.0 M乙醯水楊酸溶液之含量時,下列何種指示劑較不適用?
(A)cresol red pKa 8.3
(B)chlorophenol blue pKa 6.0
(C)methyl orange pKa 3.4
(D)phenolphthalein pKa 9.4
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統計: A(111), B(183), C(3973), D(851), E(0) #2969487
統計: A(111), B(183), C(3973), D(851), E(0) #2969487