用硝酸银滴定法,以铬酸钾作指示剂,测水中氯化物时,水样pH的范围应是A.7~10B.2~4C.12以上D.10~12E.4~6

作者: rantiku 人气: - 评论: 0
问题 用硝酸银滴定法,以铬酸钾作指示剂,测水中氯化物时,水样pH的范围应是
选项 A.7~10 B.2~4 C.12以上 D.10~12 E.4~6
答案 A
解析 :可以消除硫化物和硫酸盐等物质的干扰。

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