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Urgent Help for IGCSE Chem !

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Trinion:
Thank you Adi
I still can't find the thermal decomposition in the syllabus!
it certainly isn;t in my textbook? =(

I think you mistook what I meant, I meant say... Sodium chloride dissolves in water, neither ions in aqueous solutions change the colour of the solution correct?

Is it true for other halogens/transitional metal ions when they dissolve in water?

Ghost Of Highbury:
i'm not sure abt this but i strongly think that it takes the colour of the ppt. colour formed by the cation

fore.g-> CuSO4 -> Cu2+ + SO4(2-)

when added to water, turns blue. blue = Cu(2+)

same with NaCl

so it takes the colour precipitate of the cation

Trinion:
Cool =)

What about bromine water/solution

Why is it orange or brown? Is it because of the bromine ions?

Ghost Of Highbury:
bromine water is simply an aqueous solution of Br2 --> no ions, the colour of Br2 is brown thus bromine water is brown color.

Trinion:
Adi, doesn't an aqueous solution of an element simply mean its ions are dissolved in it?

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