【简答题】EDTA和金属离子形成的配合物有哪些特点?
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【简答题】EDTA 和金属离子形成的配合物有哪些特点?
【简答题】On a snowy evening, a rich lady was standing by the road.She was very worried.Her had broken down.Just then a poor man named Robert came.He was on his back home from work as usual. The lady wondered, ...
【简答题】On a snowy evening, a rich lady was standing by the road. She was very worried. Her had broken down. Just then a poor man named Robert came. He was on his back home from work as usual. The lady wonder...
【简答题】EDTA和金属离子形成的配合物有哪些特点?
【多选题】EDTA和金属离子形成的配合物有哪些特点?()
A.
EDTA与金属离子配位时形成五个五元环,具有特殊的稳定性。
B.
EDTA与不同价态的金属离子生成配合物时,配位比简单,为1:1,易溶于水。
C.
EDTA与无色金属离子配位形成无色配合物,可用指示剂指示终点;EDTA与有色金属离子配位形成配合物的颜色加深,不利于观察。
D.
配位能力与溶液酸度、温度有关和其它配位剂的存在等有关,外界条件的变化也能影响配合物的稳定性。