天气预报15天查询> 其他> 如何鉴别二价铁离子

如何鉴别二价铁离子

更新时间: 2020-10-13 00:00:00     

有三种方法:

1、二价铁离子能与邻二氮菲在中性或弱酸性条件下生成稳定的桔红色螯合物;

2、二价铁离子能和硫氰化钾试剂生成深蓝色沉淀;

3、二价铁离子与氢氧根反应,生成白色沉淀,白色沉淀迅速变成灰绿色,最后,变成红褐色。

关键词: 如何 鉴别 离子

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-2277608/ | 耗时:0.7962 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=2277608 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2277608 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2277608 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1102300,1917655,2776357,1971565,1687516,1133203,532213,2012050,2287138,2130537,290817,242822,1065237,1065001,1051677,2441270,2497467,1128957,1594020,413125,1067910,2125406,2740999,1867991,1066426,1070718,1066925,2737753,204813,1087805) ORDER BY field (ArticleID,1102300,1917655,2776357,1971565,1687516,1133203,532213,2012050,2287138,2130537,290817,242822,1065237,1065001,1051677,2441270,2497467,1128957,1594020,413125,1067910,2125406,2740999,1867991,1066426,1070718,1066925,2737753,204813,1087805)