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What is the equation to calculate pKw at various temperature?

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BHAVESH:
Kw of water is given at various temperatures
Like...
@ 0°C - 1.5 X 10^-15
@ 25°C - 1.0 X 10^-14

So how do I calculate at KW AT any temperature???

Thanks

mjc123:
Have you heard of the van't Hoff equation?

Borek:
Either from the thermodynamical data (as mjc123 suggested) or by fitting some function to the experimentally determined values (like these listed here: water ion product).

BHAVESH:
Thank you mjc123 & Borek.
Matter Cleared.
Thanks again!!!

BHAVESH:
Hi mjc123,
I applied Van't Hoff Equation but getting difficulties....

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