Need Help with Chem Questions

[MYNAMEIZGREG]

I need help with some chem questions.

I will give $ for the correct responses.1. Auto oxidation
In the following reaction, which reactant is reduced?
3 HBrO(aq) + 3OH-(aq) --> BrO3*-(aq) + 2 Br-(aq) + 3 H2O(l)

*Br O (subscript 3) -

[Frinkenstein]

OH-

What is my reward?

[Hobbs.]

the Br in the HBrO is in a plus 1 state and in the products is in the minus 1 state in the form of Br-.

[Jasper109]

But it's in the +3 state in the other product containing Br.

I'm looking at this from only a high school chemistry perspective, but it seems like HBrO is both the oxidizing and reducing agent. (it is oxidized and reduced)

[Hobbs.]

the thing two of the bromines are reduced to the minus one state and one is oxidized to what looks like a plus five state in the unstable intermediate compound BrO3*-.

[CheckRaise]

I believe Hobbs is correct, 2 out of the 3 Br go from +1 to -1 while the other Br goes from +1 to +5. Even though the Br is being oxidized it is also being reduced which is what the question asks in the first place. Bromine is reduced.

Hobbs, I know you know more about this stuff then me but why do you say that the bromate ion is an unstable intermediate? What product does it lead to?

[Hobbs.]

thats what the star usually means. ie it's likely to quickly react with some other stable compound our fall apart into something else. The reaction presented above is probably part of a chain of reaction (the auto oxidation implies this as well).

[Big Limpin]

Groundhog Day?

Greg, if you seriously need help with chemistry, i would be happy to help you, for free.
If this is some wierd joke, i dint get it.

[Jasper109]

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But it's in the +3 state in the other product containing Br.

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Oops. +5


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thats what the star usually means

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I think the star is there for a totally different reason.

[Hobbs.]

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thats what the star usually means

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I think the star is there for a totally different reason.

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Just realized the op used a star to better explain the compound. Nevertheless, stars often denote unstable intermediates that are formed in specific reactions that contribute to a reaction mechanism.

It appears the product (BrO3) plays an important role in reactions that exhibit non-equilibrium thermodynamics, (http://en.wikipedia.org/wiki/Belousov-Zhabotinsky_reaction)

[Jasper109]

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Just realized the op used a star to better explain the compound

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It's not a compound, it's a polyatomic ion.

[CheckRaise]

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Just realized the op used a star to better explain the compound

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It's not a compound, it's a polyatomic ion.

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nit

[Hobbs.]

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Just realized the op used a star to better explain the compound

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It's not a compound, it's a polyatomic ion.

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compound isn't incorrect. if you want to be a nit though it's polyatomic anion.