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![[Post New]](/templates/default/images/icon_minipost_new.gif) 28 Feb 2008 21:37:54 IST
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what is bleaching??(its of course removal of colour)
is it related to oxidation??
coz chlorine water releases nascent oxygen....
and why does SO2 temporarily while chlorine permanently bleach the substances??
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28 Feb 2008 21:44:51 IST
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chlorine water releases nascent oxygen .......
coloured material + [O] ----------> colourless material
this bleaching action is permanent......
SO2 + 2 H2O ---> H2SO4 + 2 [H]
coloured material + [H] ---------> colourless material
this bleaching action is temporary as the colourless material can be aerially oxidised to get back its colour...........
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28 Feb 2008 21:46:35 IST
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so what is bleaching exactly??
oxidation or reduction??
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28 Feb 2008 21:47:47 IST
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bleaching is removing of colour........ it can be done through oxidation or reduction...........
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28 Feb 2008 21:49:19 IST
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thanx
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29 Feb 2008 10:47:21 IST
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good jobramkumar
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