题目内容
某溶液中有Cu2+、NH4+、Fe3+ 和Al3+ 四种离子,若向其中加入过量的氢氧化钾溶液,微热并搅拌,再加入过量盐酸,溶液中大量减少的阳离子是
- A.Cu2+
- B.NH4+
- C.Fe3+
- D.Al3+
B
对于
,发生主要反应如下:加入
时
,再加入过量盐酸时
,
的数量在反应前后没有变化;
对于
,发生主要反应如下:加入
时
,再加入过量盐酸时
,
的数量在反应前后没有变化;
对于
,发生主要反应如下:加入
时
,再加入过量盐酸时
,
的数量在反应前后没有变化;
对于
,发生主要反应如下:加入
时
,再加热,
将从溶液中逸出,
会大量减少
故正确答案为B
对于
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image001.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image002.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image003.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image004.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image001.png)
对于
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image005.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image002.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image006.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image007.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image005.png)
对于
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image008.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image002.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image009.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image010.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image008.png)
对于
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image011.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image002.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image012.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image013.png)
![](http://thumb.1010pic.com/pic5/doc2html/Upload/2013-05/10/5b9c640b-6ca6-4f50-8a9f-4546301c2e15/paper.files/image011.png)
故正确答案为B
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目
某溶液中有Cu2+、NH4+、Fe3+ 和Al3+ 四种离子,若向其中加入过量的氢氧化钾溶液,微热并搅拌,再加入过量盐酸,溶液中大量减少的阳离子是
A.Cu2+ | B.NH4+ | C.Fe3+ | D.Al3+ |