天气预报 > 其他 > 环己烯苯甲苯如何鉴别
环己烯苯甲苯如何鉴别
更新时间: 2020-09-26 00:00:00  

鉴别步骤如下:

1、分别用试管装取少量的三种物质,再分别加入溴水。能使溴水褪色的就是环己烯;

2、分别用试管装取少量的剩余两种种物质,加入少量的酸性高锰酸钾。能使酸性的高锰酸钾褪色的就是甲苯;

3、剩余的物质就是苯。

关键词: 甲苯 如何 鉴别

环己烯苯甲苯如何鉴别相关经验

天气预报

最新推荐

页面:/news/view-2172277/ | 耗时:0.0875 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=2172277 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2172277 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2172277 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(350228,1067789,1395091,2247176,2727450,1280238,1075823,1132449,2930597,3185784,2117927,3156474,3314488,1988109,165409,1085874,2442013,2740999,1041499,2512443,229350,2363742,2016645,2475659,1897615,1072799,1074819,1102608,1276452,2026414) ORDER BY field (ArticleID,350228,1067789,1395091,2247176,2727450,1280238,1075823,1132449,2930597,3185784,2117927,3156474,3314488,1988109,165409,1085874,2442013,2740999,1041499,2512443,229350,2363742,2016645,2475659,1897615,1072799,1074819,1102608,1276452,2026414)