怎樣把氫氧化納裏的二氧化碳分離出來?
回答 (3)
2010-05-22 5:54 pm
✔ 最佳答案
氫氧化鈉與二氧化碳混合一起會發生化學反應:CO2(g) + 2NaOH(aq) → Na2CO3(aq) + H2O(l)
加入酸,例如氫氯酸:
2HCl(aq) + Na2CO3(aq) → 2NaCl(aq) + CO2(g) + H2O(l)
但嚴格D黎講,上面我只係用另一個化學反應使二氧化碳生成,
並不真的是把二氧化碳"分離"出來.
至於有冇其他方法而又較貼切"分離",
我就唔知了...
btw,希望幫到你=)
參考: 會考化學課程
2010-05-24 8:46 am
NaOH同CO2有反應前面都講左拉!
你要隔硬黎都得既...
全部通入石灰水..過濾...再蒸干
NaOH NaOH(溶液)
+ Ca(OH)2 →
CO2 CaCO3(沉)
過濾得番NaOH(溶液) 蒸干得NaOH(s)
你要隔硬黎都得既...
全部通入石灰水..過濾...再蒸干
NaOH NaOH(溶液)
+ Ca(OH)2 →
CO2 CaCO3(沉)
過濾得番NaOH(溶液) 蒸干得NaOH(s)
參考: me
2010-05-22 6:18 pm
There is no way to do so . NaOH is pure cpd which contains no carbon so how can you have any carbon dioxide !!!! Little bit of CO2 in air be absorbed by NaOH together with water to form a caustic solution but the content of CO2 is not much even you add acid to it only neutralization is mostly taken place .
收錄日期: 2021-04-13 17:15:41
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100521000051KK00844