乙醚萃取具体操作
乙醚萃取具体操作
数学人气:656 ℃时间:2020-01-31 08:31:02
优质解答
在分液漏斗中加入水相,再加入乙醚,塞紧,倒置45°角,切勿晃动,通过考克放气,摇晃数下,再放气,来回三次,静置,注意把上面的塞子拿掉,由于乙醚比水轻,所以分层后乙醚在上层
我来回答
类似推荐
猜你喜欢
- 1希望能得到帮助:现在的孩子学的数学真是太难了,也许是我真是对数学不能理解了
- 2There seems to be .为什么开头用there 不用 it
- 3根据情景写对话(英语)
- 4I really need a (relax) vacation
- 5作文《我的初中生活就这样开始了》
- 6【求翻译】certain only of what i didn't want.like Cristina.
- 7求对话,2.Discuss the topic:“How to find happiness in life?”
- 8He looks like his father but his brother looks___(like) his father.
- 9That's what I really want ...I cannot speak it out by myself ,so I determined to running around and around,actually I ne
- 10化学知识在生活中的应用