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posted by  canuck911 on 11/22/2008 6:23:31 PM  |  status: Closed  

Nernst Equation Applied to Half-Reactions

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General Chemistry N/A N/A N/A
Question Details:

Calculate the reduction potential (at 25°C) of the half-cell MnO4- (1.00×10-1 M)/ Mn2+ (3.30×10-2 M) at pH = 3.00. 
(The half-reaction is MnO4- + 8H+ + 5e- -- /> Mn2+ + 4H2O.)

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Ive used the nernst equation but i can't get this correct. 
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posted by Ricky Wilkins on 11/27/2008 7:06:56 AM  |  status: Live
Asker's Rating: Lifesaver   
canuck911's comment:
"thank you"
Response Details:
 Based on the given reaction,we can write the Nernest equation expression as follows.
  According to Nernest equation
                                 
 Therefore                 
                                 
                                             =  0.0188  (log 24.33)
                                             =  0.0260 V
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