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Topic: HTH decomposes with sodium bisulphate  (Read 2879 times)

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Offline Solly

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HTH decomposes with sodium bisulphate
« on: November 16, 2010, 04:54:14 AM »
Can anybody assist me in balancing the following reaction?

Ca(ClO)2 + NaHSO4 →?

Ca(ClO)2 can be decomposed with a acid the produce chlorine gas.  The reaction is very easy with HCl, but the reaction also takes place with sodium bisulphate NaHSO4.  The problem is that sodium bisulphate dissociates in water to Na+ and HSO4-.  The latter is in equilibrium H+  <--> SO4-. 

The Ca precipitates as CaSO4 but what happens to the Na?  Does it from Na2SO4?

I’ve balanced it to;

Ca(ClO)2 + 2NaHSO4 --->  CaSO4 + Na2SO4 + 2H2O + Cl2

But is not correct.  Can anybody help me?

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Re: HTH decomposes with sodium bisulphate
« Reply #1 on: November 16, 2010, 10:53:43 AM »
Problem is not with sodium, problem is with products of HClO decomposition. Once you will know how it decomposes, Na+ is just a spectator.
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