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Topic: Redox reaction  (Read 5482 times)

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rsixtyone

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Redox reaction
« on: October 06, 2005, 10:43:03 PM »
hello all, i have a problem on this problem:

For the following UNBALANCED redox reaction, what is the coefficient for water when the reaction is balanced under BASIC conditions:
Fe+2 (aq) + BrO3- (aq) ==> Fe+3 (aq) + Br- (aq)?

i got 2 H2O somehow.
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Offline mike

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Re:Redox reaction
« Reply #1 on: October 07, 2005, 12:10:34 AM »
I got 3H2O
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There is no science without fancy, and no art without facts.

Offline sdekivit

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Re:Redox reaction
« Reply #2 on: October 07, 2005, 05:16:01 AM »
Quote from: rsixtyone on October 06, 2005, 10:43:03 PM
hello all, i have a problem on this problem:

For the following UNBALANCED redox reaction, what is the coefficient for water when the reaction is balanced under BASIC conditions:
Fe+2 (aq) + BrO3- (aq) ==> Fe+3 (aq) + Br- (aq)?

i got 2 H2O somehow.

Fe(2+) --> Fe(3+) + e(-)

and:

BrO3(-) --> Br(-)

thus this will be, in basic cirucmstances:

BrO3(-) + 6 H(+) + 6 OH(-) --> Br(-) + 3 H2O + 6 OH(-)

thus:

BrO3(-) + 3 H2O --> Br(-) + 3 OH(-)
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