试题与答案

用标准浓度的盐酸滴定未知浓度的NaOH溶液,下列各操作(其他操作正确)中会造成测

题型:选择题

题目:

用标准浓度的盐酸滴定未知浓度的NaOH溶液,下列各操作(其他操作正确)中会造成测定结果偏低的是

A.酸式滴定管尖嘴部分有气泡,滴定后消失

B.滴定终点读数时俯视读数

C.用蒸馏水洗净酸式滴定管后,装入标准盐酸进行滴定

D.锥形瓶水洗后未干燥

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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