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如何向清净的滴定管里装溶液

更新时间: 2020-10-13 00:00:00     

滴定管分为碱式滴定管和酸式滴定管,滴定管里装溶液时应倾斜滴定管。

并且添加溶液时应注意:

1、加入时一定不要将滴定液洒到管的外壁,溶液蒸发吸收热量,玻璃管温度降低,出现体积误差;

2、手不能接触刻度线部分,手的温度会使玻璃膨胀,出现体积误差;

3、第一加满的滴定液必须全部放掉,玻璃管内表面吸附的水分会改变滴定液的f值。

关键词: 如何 清净 滴定管 溶液

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