pH and temperature

[j49sun]

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why does water become more acidic with temperature?

If Kw is increased, H+ increases but what happens to OH-?

Thanks

 

[icewave667]

http://chemwiki.ucdavis.edu/Physica...Temperature_Dependent_of_the_pH_of_pure_Water

good website with explanation. I would use pH+pOH=14 to find out pOH and consequently, OH-