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posted by  adison on 7/21/2008 9:44:39 PM  |  status: Live  

chemistry

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Determine the oxidation numbers of all the elements in each of the following compounds (Hint: look at the ions presen)
Hg(BrO3)2

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posted by Ricky Wilkins on 7/21/2008 11:56:20 PM  |  status: Live
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  Hg(BrO3)2  This is a ionic compound ,hence Hg has +2 oxidation state ,The oxidation state of the Br in BrO3- is calculated as follows
  BrO3-
 The Oxidation number of Br + 3(Oxidation number of the Oxygen) = -1
 The Oxidation number of Br + 3(-2) = -1
  The Oxidation number of Br - 6 = -1
 The Oxidation number of Br      = +5
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posted by CHEMNATION! on 7/22/2008 5:17:34 AM  |  status: Live
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The bromate ion, BrO3-, is a singly-charged polyatomic anion.  Since the oxidation number of O is -2 in this ion, the oxidation state of Br is +5.  Also, since you have two bromate ions, the oxidation state of Hg must be +2.
 
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posted by HikariOne on 7/22/2008 9:08:00 AM  |  status: Live
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Response Details:
we can rewrite the following compound as

thus
we know that oxygen has 8 different oxidation states
and in most oxides its value is
from this we can find the oxidation number for





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