Chlorate reaction equation

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Offline Paul D

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Chlorate reaction equation
« on: 03/02/2006 15:21:43 »
Hi all,

this is my first post on the forum so i hope somebody out there can help me.

I have a reaction mixture of NaClO3 + NaCl + NaIO3 in mildly acidic conditions (pH 6)that gives off Cl2.  Can anybody find an appropriate equation for this reaction.  I have busted my gut for the past 2 weeks without success.
 

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Offline rafale

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Re: Chlorate reaction equation
« Reply #1 on: 05/02/2006 15:24:02 »
Im sorry I cannot imagine the reaction product from this.
What acid did you use? Are you sure it is Cl2 that is given off?

some points:
-NaCl is an ionic bond hard to break.
-The bond between oxygen and iodine is more polar than with chlorine,
electronegativities:
O(3.44), Cl(3.16), I(2.66)
O - Cl = 3.44 - 3.16 = 0.28
O - I  = 3.44 - 2.66 = 0.78

It could be chlorine or oxygen that is released.
 

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Offline Paul D

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Re: Chlorate reaction equation
« Reply #2 on: 06/02/2006 09:08:07 »
Yes it is definitely chlorine and I can use any acid nitric hydrochloric or sulphuric.
 

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Offline wim

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Re: Chlorate reaction equation
« Reply #3 on: 06/02/2006 19:08:59 »
are you sure this is one balanced reaction because from looking at the used products it makes me think of the preparation of NaClO3 , could it be that the acid is making this process reversing because of the acid? I don't think so, this reaction seems unlikely!

NaClO3 preparation
Na+  +  Cl-  elektrolyse gives:
                               -Na(solid) + H20 gives NaOH
                               - NaOH + Cl2(elektrolyse)            
                                 gives NaCLO(high T) gives NaClO3

and if what you say is true then surely the I2 would come free before the Chloride because of elektronegativity

grtz
 

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Offline rafale

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Re: Chlorate reaction equation
« Reply #4 on: 06/02/2006 23:17:07 »
I think I found something for you:

  newbielink:http://en.wikipedia.org/wiki/Chlorine_dioxide [nonactive]
  newbielink:http://en.wikipedia.org/wiki/Sodium_chlorate [nonactive]

hope it helps.
 

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Offline Paul D

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Re: Chlorate reaction equation
« Reply #5 on: 07/02/2006 09:02:44 »
Yes I think that might be it, thanks