查看完整版本 : 鐵

黑色天空下 2013-10-8 06:55 PM

為什麼鐵生銹會失去兩個電子??:smile_41:



[url=http://www.discuss.com.hk/android][img=100,23]http://i.discuss.com.hk/d/images/r10/androidD.jpg[/img][/url]

dustbus 2013-10-8 07:36 PM

[quote]原帖由 [i]黑色天空下[/i] 於 2013-10-8 06:55 PM 發表 [url=http://www.discuss.com.hk/redirect.php?goto=findpost&pid=373292403&ptid=22533945][img]http://www.discuss.com.hk/images/common/back.gif[/img][/url]
為什麼鐵生銹會失去兩個電子??:smile_41:



[img]http://i.discuss.com.hk/d/images/r10/androidD.jpg[/img] [/quote]

the chemical formula of rusting iron唔係Fe2O3乘xH2O咩:smile_41:
唔係甩3粒咩:smile_27::smile_27:

黑色天空下 2013-10-8 07:37 PM

係呀:smile_24:



[url=http://www.discuss.com.hk/android][img=100,23]http://i.discuss.com.hk/d/images/r10/androidD.jpg[/img][/url]

dustbus 2013-10-8 09:34 PM

你等D勁人上水~~:loveliness: :loveliness:

jmlo 2013-10-9 09:27 AM

[quote] 為什麼鐵生銹會失去兩個電子?? [/quote]
The simplest answer is that iron is being oxidized during the process of rusting.

Indeed, whether Fe2+ or Fe3+ is formed depends on the O2 concentration in the environment. When [O2] is low, Fe2+ is formed while when [O2] is high, Fe3+ is formed instead.

黑色天空下 2013-10-9 04:43 PM

[quote]原帖由 [i]jmlo[/i] 於 2013-10-9 09:27 AM 發表 [url=http://www.discuss.com.hk/redirect.php?goto=findpost&pid=373326004&ptid=22533945][img]http://www.discuss.com.hk/images/common/back.gif[/img][/url]The simplest answer is that iron is being oxidized during the process of rusting.Indeed, whether Fe2+ or Fe3+ is formed depends on the O2 concentration in the environment. When [O2] is low, Fe2+ ... [/quote]中文係?



[url=http://www.discuss.com.hk/android][img=100,23]http://i.discuss.com.hk/d/images/r10/androidD.jpg[/img][/url]

jmlo 2013-10-9 10:58 PM

回覆 6# 的帖子

簡單的說﹐鐵在生鏽的過程中到底會丟掉兩顆或三顆電子﹐是取決於環境中氧氣的濃度。氧氣濃度低的話﹐鐵會被氧化成Fe2+。相反﹐如果氧氣濃度高﹐鐵就會被氧化成Fe3+。

dustbus 2013-10-9 11:55 PM

如果樓主連基本英文都唔識........:smile_27: :smile_27:

點解唔試下自己google下呢:smile_41:

↗亢龍無悔↙ 2013-10-10 08:30 AM

[quote]原帖由 [i]dustbus[/i] 於 9-10-2013 11:55 PM 發表 [url=http://www.discuss.com.hk/redirect.php?goto=findpost&pid=373375619&ptid=22533945][img]http://www.discuss.com.hk/images/common/back.gif[/img][/url]如果樓主連基本英文都唔識........:smile_27: :smile_27: 點解唔試下自己google下呢:smile_41: [/quote]呵呵,笑鳥:lol



[url=http://www.discuss.com.hk/android][img=100,23]http://i.discuss.com.hk/d/images/r10/androidD.jpg[/img][/url]
頁: [1]
查看完整版本: