当用福尔哈德法返滴定测I–时,指示剂必须在加入过量的AgNO 3 溶液后才能加入,这是因为( )。 -题库考试答案搜索网

当用福尔哈德法返滴定测I–时,指示剂必须在加入过量的AgNO ₃ 溶液后才能加入,这是因为( )。

单选题

2021-07-17 23:35

A、AgI 对指示剂的吸附性强
B、AgI 对I<sup>–</sup>的吸附强
C、Fe<sup>3+</sup>氧化I<sup>–</sup>
D、终点提前出现

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正确答案

C

试题解析

标签：水利水电工程专升本水利工程施工 2019毕业清考 2019级毕业清考（考试分）水利工程经济水利水电建筑工程高起专给排水工程技术水质工程学 2019级第三学期期末考试

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