下面有关配制、标定KMnO 4标准溶液的叙述，不正确的是（）。 -题库考试答案搜索网

下面有关配制、标定KMnO ₄标准溶液的叙述，不正确的是（）。

单选题

2021-07-17 23:03

A、溶液标定前需加热煮沸一定时间或放置数天
B、溶液必须用滤纸过滤除去MnO<sub>2</sub>
C、必须保存在棕色瓶中
D、滴定时KMnO<sub>4</sub>溶液必须装在酸式滴定管中

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正确答案

B

试题解析

标签：化工分离工程资源勘查工程专升本资源与环境遥感 2020年第二学期期末考试分离工程期末试卷3

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