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April 29, 2024, 02:19:25 pm
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Author Topic: Identifying a redox  (Read 793 times)  Share 

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  • Victorian
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Identifying a redox
« on: November 15, 2008, 10:02:51 pm »
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Which of the following equations is a redox reaction?

A.

B.

C.

D.

The answer is B

But I don't understand why?!
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Matt The Rat

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Re: Identifying a redox
« Reply #1 on: November 15, 2008, 10:13:09 pm »
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Change in oxidation numbers. has 0 as an oxidation number then has -1 as an oxidation number. Just look for a change in oxidation number and you'll find the redox reaction.
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Re: Identifying a redox
« Reply #2 on: November 15, 2008, 10:18:40 pm »
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Thanks Matt the Rat,

But in the has an oxidation number of +1, so would the be the oxidant or the reductant?
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Wizard

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Re: Identifying a redox
« Reply #3 on: November 15, 2008, 10:50:28 pm »
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As the oxidation number of Iodine has increased to +1 and -1, it acts as both a reductant and an oxidant

I think... :)
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nerd

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Re: Identifying a redox
« Reply #4 on: November 15, 2008, 11:53:13 pm »
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Is that even possible, for a substance to act as an oxidant and reductant at the same time?
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