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March 29, 2015

Homework Help: Chemistry

Posted by Anne on Wednesday, December 12, 2007 at 8:24pm.

Hi, if anyone can give me help for any part of the question that would be great! I know how to draw the cell diagram, but am not sure what the half-reactions would be.... Here is the question:

Give the cell diagram notation of the electrochemical cell that could be used to determine experimentally the dissociation constant (Kw) of water.

The standard reduction potential for
O2 + H20 + 4 e- ----> 4OH- is 0.40 V

For other possible half-reactions, see your textbook.

Calculate E for this cell.

Also, calculate the dissociation constant at 298K.

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