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Topic: balancing redox equation  (Read 2588 times)

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Offline winspice

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balancing redox equation
« on: August 22, 2010, 03:22:29 PM »
ReO2 + Cl2  ---->   HReO4 + Cl-
Cl2 ----> Cl-

I need some help in balancing this redox equation.I don't know if I should combine the Cl- and H+ at the end or should I add OH- instead? Thanks.

Offline Borek

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Re: balancing redox equation
« Reply #1 on: August 22, 2010, 03:26:18 PM »
Are you told what is solution pH, or not?
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Offline winspice

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Re: balancing redox equation
« Reply #2 on: August 22, 2010, 04:06:55 PM »
no pH is provided.

Offline Borek

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Re: balancing redox equation
« Reply #3 on: August 22, 2010, 04:18:39 PM »
So start with water on the left.

Try to write both half reactions at first. Can you tell what is getting oxidized and what is getting reduced?
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Offline winspice

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Re: balancing redox equation
« Reply #4 on: August 22, 2010, 04:24:49 PM »
Cl2 is going to be reduced while ReO2 is oxidized. At the end I came up with the equation
3Cl2+2ReO2+4H2O--->6Cl-+6H+ +2HReO4

Offline Borek

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Re: balancing redox equation
« Reply #5 on: August 22, 2010, 05:11:32 PM »
Seems OK.
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