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Chromium oxidation
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Topic: Chromium oxidation (Read 3248 times)
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Rutherford
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Posts: 1868
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Chromium oxidation
«
on:
August 31, 2012, 01:18:55 PM »
I know that in acidic solution Cr
2
O
7
2-
and CrO
4
2-
get reduced to Cr
3+
, but under what conditions Cr
3+
gets oxidized to CrO
4
2-
, and what conditions are required to make Cr
2
O
7
2-
?
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Borek
Mr. pH
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I am known to be occasionally wrong.
Re: Chromium oxidation
«
Reply #1 on:
August 31, 2012, 02:02:41 PM »
Quote from: Raderford on August 31, 2012, 01:18:55 PM
what conditions are required to make Cr
2
O
7
2-
?
Just a matter of pH:
2CrO
4
2-
+ 2H
+
Cr
2
O
7
2-
+ H
2
O
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ChemBuddy
chemical calculators - stoichiometry, pH, concentration, buffer preparation,
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Rutherford
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Re: Chromium oxidation
«
Reply #2 on:
August 31, 2012, 03:58:27 PM »
Then, acidic solution=dichromate, basic solution=chromate?
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Borek
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Re: Chromium oxidation
«
Reply #3 on:
August 31, 2012, 05:00:32 PM »
Or mixture of both.
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ChemBuddy
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Rutherford
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Re: Chromium oxidation
«
Reply #4 on:
September 01, 2012, 03:54:17 AM »
Okay, thanks.
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Chromium oxidation