濃硫酸係咪可以製造氫氯酸同埋硝酸?

2007-03-01 7:05 am
如題~~~如果係得的話~
請解釋 ~

回答 (4)

2007-03-02 6:41 am
✔ 最佳答案
It can't,
Hydrochloric acid is produced by dissolving hydrogen chloride into water, where hydrogen chloride is formed by the reaction between hydrogen gas and chlorine gas

H2(g) + Cl2(g) --> 2HCl(g)
HCl(g) + H2O(l) <> H3O+ Cl-

Nitric acid is produced by dissolving nitrogen dioxide and oxygen into water

1. 3H2(g) + N2(g) <> 2NH3 (Haber Process)
2. 4NH3(g) + 5O2(g) --> 4NO(g) + 6H2O(l)
3. 2NO(g) + O2(g) --> 2NO2(g)
4. 4NO2(g) + O2(g) + 2H2O(l) --> 4HNO3(aq)

Also there are some mistakes I want to illustrate;
1. chlorine gas will react with water readily to form hydrochloric acid and hypochloric acid, but not only hydrpchloric acid
Cl2(g) + H2O(l) --> HCl(aq) + HOCl(aq)

2.When nitrogen dioxide dissolves into water, the products are not only the nitric acid, but with nitrous acid;
2NO2(g) + H2O(l) --> HNO3(aq) + HNO2(aq)

2007-03-03 01:47:13 補充:
no,据我所知,沒有無機酸制無機酸有的, 硫酸可以制備到磷酸的;Wet phosphoric acid: Green phosphoric acid is prepared by adding sulphuric acid to calcium phosphate rock, or slurry. The reaction for calcium phosphate slurry is: 3H2SO4(aq) Ca3(PO4)2(aq) 6H2O(l) ↔ 2H3PO4(aq) 3CaSO4(aq) 6H2O(l)
2007-03-03 10:49 am
理論上應該得.....
實際當然唔知.....
========================
用一D係Cl-或NO3-狀態係溶,但係係SO4 2-係唔溶既鹽咪得~
e.g.H2SO4->2H+ +SO4 2-
CuNO3(可溶)+ SO4 2->CuSO4(不溶)+NO3-
NO3-+H+(來自2SO4)->HNO3
如果得的話....應該有大量沉澱出現.......
應該得既......
未聽過唔等於唔得....可能因為唔經而唔用.....
加上......所造出來既HCl同HNO3一定唔係pure....
因為一定有殘餘既H2SO4....可溶鹽.....等等...
參考: 只是討論.....同理論
2007-03-03 4:45 am
no,据我所知,沒有無機酸制無機酸
2007-03-01 6:07 pm
化學構造上是沒有用的.或許在工業製造上難免有用吧.
把氯氣溶於水會生成HCl了.或氫氣和氯氣經陽光照射都會生成.還有很多..
把NO2溶於水則會生成硝酸.
參考: 自己


收錄日期: 2021-04-13 14:17:37
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070228000051KK05188

檢視 Wayback Machine 備份