Ethanol(乙醇)
When it talks to alcohol, some people will
associate with the fact that drinking too much will make you drunk. However, in
this essay, I want to introduce a special property of it that help your daily
life. By the way, it formal name is ethanol.
(quoted from http://www.baike.com/wikdoc/sp/qr/history/version.do?ver=6&hisiden=PHl,p,WQVlYdglaYAscUlJFXA
Ethanol has the chemical formula C2H5OH,
and well-known organic compound in our life, especially in our diet. In normal
temperature and pressure (NTP), it is a colorless
liquid with volatility(揮發性) and flammable(可燃性). Besides, look at the structure of
it, you will discover the carbon chain and the hydroxyl group(-OH羥基). The former
makes it easily dissolve the nonpolar compound, and the latter makes it could
construct hydrogen bond(氫鍵) with water. In other words, it can combine
water in a homogeneous(均相的) way.
(adapted from http://gaokao.hujiang.com/tiku/p1462687/)
Having this special property, ethanol can blend
the nonpolar compound with the water. That is, the thing can’t be cleaning by
water originally will be clean by water and ethanol. Next time, if you had to
clean some nonpolar things in your daily life, you could try some ethanol.
It's great to have another sight of ethanol and the notes is helpful as well!
回覆刪除C2H5OH is actually "ethanol" instead of "alcohol", though I didn't know this until this year. 0.0
回覆刪除