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Topic: Halogens  (Read 2811 times)

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Offline cocogurl55

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Halogens
« on: December 07, 2007, 12:47:20 AM »
When halogens such as bromine, chloride, and iodide are presented in water solution do they maintain there color or do they become clear?
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Offline Dan

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Re: Halogens
« Reply #1 on: December 07, 2007, 08:29:22 AM »
The halogens themselves are only sparingly soluble in water (iodine being almost insoluble in water). When you mix a halogen with water you get equilibriums of this type:

X2 + H2O <----> XOH + HX

The X2 present in solution will give you colour. "Bromine water" is orange for example. Cl2 in water (bleach) is very pale green.
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Offline lost and found

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Re: Halogens
« Reply #2 on: December 09, 2007, 04:44:56 PM »
Quote
Cl2 in water (bleach) is very pale green.

I thought bleach was NaOCl dissolved in water.

The halogens will dissolve in water, but will only form that equilibrium in sunlight.

MB
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