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如何测醋酸的浓度

更新时间: 2020-09-16 00:00:00     

使用白醋10毫升置于250毫升容量瓶中,用蒸馏水稀释至刻度、摇匀。用25毫升移液管分取3份上述溶液,分别置于250毫升锥形瓶中,加入酚酞指示剂2至3滴,用每升氢氧化钠0.1摩卡的标准溶液滴定至微红色在30秒内不退色即为醋酸浓度。

关键词: 如何 醋酸 浓度

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