From: Bob Axtell wrote:

> The problem with water is that while it might be pure ONCE, it won't stay
> that way. Water dissolves- and is contaminated by- just about everything.
>
> --Bob
>

Yes, even itself.

Water ionically dissociates into hydrogen and hydroxyl ions in other words H2O
goes to H+ and OH- (actually the hydrogen ions are hydrated to hydroxonium ions
to form [H(H2O)n]+ )

So pure water does contain charge carriers and is not an insulating fluid in the
same sense that an organic liquid such as carbon tetrachloride is an insulating
fluid.

The ionic product of water is 10^-14 (10 to the power -14) at 25 C but increases
rapidly with temperature. In other words the conductivity changes with
temperature.

Regards
Sergio Masci

http://www.xcprod.com/titan/XCSB - optimising structured PIC BASIC compiler

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