超星 - 实验六高锰酸钾

单选题

Which of the following experiments uses the self-indicator method?

A. Standardization KMnO4 solution
B. Standardization NaOH solution
C. Standardization Na2S2O3 solution
Determination of the content of ammonium chloride

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单选题

When determine the concentration of H2O2 with KMnO4 solution, which can be used to control acidity? （）。

A. HNO3
B. HCl
C. HAc
D. H2SO4

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单选题

Which indicator is used in the determination of H2O2 （）

A. KMnO4
B. Phenolphthalein indicator
C. Eriochrome Black T
D. methyl orang indicator

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单选题

用草酸钠标定KMnO4溶液时，滴定至终点的颜色为（）

A. 紫色
B. 淡蓝色
C. 橙红色
D. 淡红色

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Which of the following experiments uses the self-indicator method?

When determine the concentration of H2O2 with KMnO4 solution, which can be used to control acidity? （ ）。

Which indicator is used in the determination of H2O2 （ ）

用草酸钠标定KMnO4溶液时，滴定至终点的颜色为（）

When determine the concentration of H2O2 with KMnO4 solution, which can be used to control acidity? （）。

Which indicator is used in the determination of H2O2 （）