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沒法平 h2so4應為生成物,h2o應為反應物, 如果交換了的話,係數為25212
苯的同系物如甲苯或其它烷基苯與高錳酸鉀作用時,總是得到苯甲酸, 能退色.但與苯環相聯的碳原子上不含氫時,如叔丁基苯側鏈不易被 氧化為羧基,不能使高錳酸鉀退色.
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