about hypochlorite

First, you should know how hypochlorite ion is formed.

Cl2 (g) + H2O (l) --} H+ (aq) + OCl- (aq) + Cl- (aq) + H2O (l)

From the above equation, we can know that there are hypochlorite ions (OCl- ) and chlorine ions (Cl-) present in the solution.

Therefore, you can find chlorine ions and hypochlorite ions at the same time.

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Difference between chlorine bleach,

The formation of chlorine bleach is as follows:

Cl2 (g) + NaOH (aq) --} NaOCl (aq) + NaCl (aq) + H2O (l)

The above equation is orginally combined from 2 equations.

Cl2 (g) + H2O (l) --} H+ (aq) + OCl- (aq) + Cl- (aq) + H2O (l) -----(1)

From equation (1),

There is hydrochloric acid and hypochlorous acid. This two acids react with sodium hydroxide solution to give sodium hypochlorite and sodium chloride.

HOCl (aq) + NaOH (aq) ---} NaOCl (aq) + H2O (l) ----(2)

HCl (aq) + NaOH (aq) ----} NaCl (aq) + H2O (l) ----(3)

By combining (2) & (3),

we can obtain (1)


From the above analysis,

we can see that there are hypochlorite ions and chlorine ions in both chlorine bleach and chlorine water.



Hope my explanations help.

有兩道明顯錯處
1. 無錯條式的確係chlorine bleach + dilute acid既反應
但上面條式出現Cl-係因為HCl
HCl係aq state底下係完全ionize變成H+同埋Cl-

2. "chlorine bleach同埋hypochlorite應該係2樣唔同既野"
呢句唔岩
因為hypochlorite係chlorine bleach入面其中一種成分
通常係NaOCl同Ca(OCl)2

我唸你可能混淆左bleaching同reaction between hypochlorite and dilute acid
bleaching係OCl- + dye-->Cl- + (dye-O)