Tuesday
September 2, 2014

Homework Help: Chemistry

Posted by Eddie on Sunday, April 18, 2010 at 2:09pm.

Calculate the standard cell potential for each of the following electrochemical cells.

Ni^+2(aq)+Mg(s)--->Ni(s)+Mg^+2(aq)

I used the e cell values from the back of my book. They are:

Ni^+2(aq)+2e--->Ni(s) E^0= -0.23 V
Mg^+2(aq)+2e--->Mg(s) E^0= -2.37

I did E^0= -0.23 - 2.37= -2.60 V ; however, my online hw said that was wrong. Is there another step I'm missing?

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