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  1. 13-11-2007, 08:09 PM #1
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    Extor
    Extor is offline Junior Member
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    Default Chemistry help. :]

    The cells which power heart pacemakers contain lithium metal.

    a) Why is lithium a good choice for the negative electrode.

    b) Explain why water is not used in the electrolytic layer.



    +rep for help :] xx
    princess!!!
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  2. 16-11-2007, 09:55 PM #2
    superc
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    Lithium is good as the negative electrode due to the fact that it is a highly reacive metal and it has a high number of electrons to give off (I think!)

    Water will reacts with the lithium causeing a VERY dangerous metal fire. It is also a poor electolite.
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