The potentiometric method or the crystal violet indicator was used to indicate the end-point.

选用高氯酸— 冰醋酸标准液滴定，以电位法或结晶紫指示剂指示终点。

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The potentiometric method or the crystal violet indicator was used to indicate the end-point.

选用高氯酸— 冰醋酸标准液滴定，以电位法或结晶紫指示剂指示终点。

youdao