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Topic: how to write this equation  (Read 3912 times)

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Offline osmillieo

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how to write this equation
« on: October 19, 2007, 08:47:58 PM »
In the balanced equation for the reaction where dichromate oxidizes aq. HCl to chlorine gas, the number of waters is (acidic solution)...

Can someone help get me started by writing out what this equation even looks like..
to me it seems to be Cr2O72- + HCl ----> Cl2
I don't think I am even close..
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Offline Borek

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Re: how to write this equation
« Reply #1 on: October 20, 2007, 03:58:30 AM »
Perhaps you are not close yet, but you are definitely on the right track. The main problem now is that there is no reduced chromium on the right - and I suggest you use Cl-, not HCl (remember this is strong acid, fully dissociated).
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Offline hyang

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Re: how to write this equation
« Reply #2 on: November 08, 2007, 02:07:19 AM »
Cr2O4-+HClCr3+H2O+Cl2
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Offline AWK

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Re: how to write this equation
« Reply #3 on: November 08, 2007, 04:27:50 AM »
Quote from: hyang on November 08, 2007, 02:07:19 AM
Cr2O4-+HClCr3+H2O+Cl2
Cr2O72- + HCl + H3O+ = Cr3 + H2O + Cl2(g)
Balance this equation
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