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December 22, 2014

Homework Help: Analytical Chemistry

Posted by Max on Monday, October 11, 2010 at 10:12pm.

I am trying to find moles of IO3 from Cu(IO3)2 10 ml and standardized sodium thiosulfate (Na2S2O3.5H20) .28 M.

My calc is:

0.28 Moles Na2S2O3.5H20 * (2 moles of S2O3/1 mole Na2S2O3.5H20)* (2 moles of (IO3)/1 mole Cu(IO3)2= (1.12/.01 L)

but that is why to high for (M) what am I doing wrong?

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