In the method glacial acetic acid was used as solvent,and(0.2%) viola crystalline was used as indicator. Betaine hydrochloride was titrated by(0.1) mol/L perchloric acid solution.
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以冰醋酸作溶媒;以0.;2%25结晶紫为指示剂;用0
单词 In the method glacial acetic acid was used as solvent,and(0.2%) viola crystalline was used as indicator. Betaine hydrochloride was titrated by(0.1) mol/L perchloric acid solution. 的词典定义。@海词词典-最好的学习型词典
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