Equation for sodium thiosulfate and iron (III) nitrate Watch

nonsensical137
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Please can someone tell me what the equation is for the reaction between sodium thiosulfate and iron (III) nitrate?
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great0
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[QUOTE=nonsensical137;77953540]Please can someone tell me what the equation is for the reaction between sodium thiosulfate and



Na2S2O3 + Fe(NO3)3 ----->
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BobbJo
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2Fe(3+) + 2S2O3(2-) = 2Fe(2+) +S4O6(2-)
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nonsensical137
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(Original post by BobbJo)
2Fe(3+) + 2S2O3(2-) = 2Fe(2+) +S4O6(2-)
What's the overall reaction though instead of just the reduction?
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nonsensical137
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Is this the correct equation for the reaction between sodium thiosulfate and iron (III) nitrate?
2 Na2S2O3(aq) + 2 Fe(NO3)3(aq) ----> Na2S4O6(aq) + 2 Fe(NO3)2(aq) + 2 NaNO3(aq)
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Kian Stevens
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(Original post by nonsensical137)
What's the overall reaction though instead of just the reduction?
3Fe^{3+} + 6S_{2}O_{3}^{2-} \rightarrow 3S_{4}O_{6}^{2-} + 3Fe
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nonsensical137
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(Original post by Kian Stevens)
3Fe^{3+} + 6S_{2}O_{3}^{2-} \rightarrow 3S_{4}O_{6}^{2-} + 3Fe
But this is still not the overall reaction....
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charco
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(Original post by nonsensical137)
Is this the correct equation for the reaction between sodium thiosulfate and iron (III) nitrate?
2 Na2S2O3(aq) + 2 Fe(NO3)3(aq) ----> Na2S4O6(aq) + 2 Fe(NO3)2(aq) + 2 NaNO3(aq)
It'll do ...

Although, in reality you will just be left with a solution containing lots of positive and negative ions. you can't really say that the iron(III) ions will specifically go with the nitrate ions etc..
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charco
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(Original post by Kian Stevens)
3Fe^{3+} + 6S_{2}O_{3}^{2-} \rightarrow 3S_{4}O_{6}^{2-} + 3Fe
2Fe3+ + 2S2O32- --> 2Fe2+ + S4O62-
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nonsensical137
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(Original post by charco)
It'll do ...

Although, in reality you will just be left with a solution containing lots of positive and negative ions. you can't really say that the iron(III) ions will specifically go with the nitrate ions etc..
What will the equation look like then?

2Fe3+(aq) + 2S2O32- --> 2Fe2+(aq) + S4O62-(aq)
This equation doesn't account for the sodium and nitrate ions...
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Kian Stevens
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(Original post by charco)
2Fe3+ + 2S2O32- --> 2Fe2+ + S4O62-
Mine was for the complete reduction of Fe3+.

In all honesty, I had an educated guess, so.
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charco
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(Original post by Kian Stevens)
Mine was for the complete reduction of Fe3+.

In all honesty, I had an educated guess, so.
In any case, it doesn't balance. You have 3- on the LHS and 6- on the RHS.
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charco
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(Original post by nonsensical137)
What will the equation look like then?

2Fe3+(aq) + 2S2O32- --> 2Fe2+(aq) + S4O62-(aq)
This equation doesn't account for the sodium and nitrate ions...
Like I said, you can't really ascribe ions as they are all spectator ions in solution, so it doesn't make sense trying to.

You should never include spectator ions specifically for this reason - they are spectator ions and not involved.
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