Chlorine water 同 Chlorine bleach 之間有咩分別? 急

2008-04-25 1:38 am
Chlorine water 同 Chlorine bleach 一個係acidic , 一個係alkaline, 但兩者係chemical reaction是否有分別?

因為兩者都有 OCl- ion, 所以有點亂><"
可否可詳加說明..thx~

回答 (2)

2008-04-25 2:26 am
✔ 最佳答案
氯水(Chlorine water)是氯氣加水,
Cl2(g)+H2O(l) ===== HCl(aq)+HOCl(aq)
產品中有酸(HCl)
漂白水(Chlorine bleach)是氯氣加氫氧化鈉(NaOH)
Cl2(g)+2NaOH(l) ===== NaCl(aq)+NaOCl(aq)+H2O(l)

製造出來的東西是有分別的
而且,漂白水的漂白功能比氯水強!

2008-04-24 22:00:12 補充:
樓下的仁兄竟然可以在沒有牽涉電子的情況下創製一條half-equation,小弟真是萬分佩服

2008-04-25 15:52:15 補充:
漂白水緊係同dye做reaction啦,係一個redox reaction
HOCl+dye ==== HCl+[O+dye]
同SO2(g)最大ge分別係Cl2(g)做oxidizing agent而SO2(g)做reducing agent
HOCl+dye ==== HCl+[O+dye] dye oxidized
SO2+dye ==== SO4 2- + [dye-O] dye reduced
2008-04-25 4:30 am
首先Chlorine water =/= Chlorine bleach


Chlorine bleach:
made by dissolving chlorine in cold sodium hydroxide
solution

Cl2(g) + 2NaOH(aq) → NaCl(aq) + NaOCl (aq) +H2O(l)

half eq.係
Cl2(g) + 2OH-(aq) → Cl-(aq) + OCL-(aq) + H2O(l)

當Cl2(g) 同NaOH react 完之後 ,OCL- ion 係會同H2O react
OCl-(aq) +H2O →OH-(aq) + HOCl(aq)

Chlorine bleach 之所以 alkaline 就係因為有OH- 既ions



Chlorine water:
made by dissolves chlorine in water

Cl2(aq) +H2O →H+(aq) +Cl- (aq)+ HOCl(aq)
Chlorine water 之所以acidic就係因為 有H+既ions
參考: my chem knowledge


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