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July 24, 2014

Homework Help: college chemistry

Posted by Stephanie on Wednesday, April 28, 2010 at 12:42pm.

A zinc-copper battery is constructed as follows:

Zn | Zn+2(0.10 M) || Cu+2 (2.50 M)| Cu

The mass of each electrode is 200.0 g. Each half cell contains 1.00 liter of solution.
a) Calculate the cell potential when this battery is first connected.
b) Calculate the cell potential after a current of 10.0 amperes has flowed for 10.0 hours.
c) Calculate the mass of each electrode after 10.0 hours.
d) What is the total life span of this battery, delivering a current of 10.0 amperes, before it goes dead. (Hint: You need to know the limiting reagent. Is it Zn or Cu+2)

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