Posted by Dewa on Monday, November 21, 2011 at 9:12am.
This question has been answered before.
"the value of Kw is 2.92
10-14" ?? units are missing
Given that [H+][OH-]=Kw and that
[H+] = [OH-] for pure water
then
[H+][OH-]=[H+][H+]=2.92 x 10^-14
[H+]^2= 2.92 x 10^-14
[H+] = sqrt(2.92 x 10^-14)
but this is missing the units.
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