Wednesday
April 23, 2014

Homework Help: chemistry - exam practice help!!

Posted by Anya on Thursday, December 13, 2012 at 11:00am.

For the cell shown below, which will increase the cell voltage the most?

Fe2+ | Fe3+ || Cu2+ | Cu

A) Halve[Cu2+]
B) Double[Cu2+]
C) Double[Fe2+]
D) Halve[Fe2+]
E) Cut Cu electrode in half


...
Ecell = E0 cell + 0.059/n * log([Cu+]/[Fe2+])

Ecell is directly proportional [Cu+] to and inversely proportional to [Fe2+]..

so i would think the answer would be, B and D both


but there can only be one answer , so i dont really know how else to work it out :/

pls help!

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