Kw http://www.chemguide.co.uk/physical/acidbaseeqia/kw.html http://www.chemguide.co.uk/physical/acidbaseeqia/kw.html http://www.chemguide...aseeqia/kw.html http://www.chemguide...aseeqia/kw.html http://www.chemguide.co.uk/physical/acidbaseeqia/kw.html not exactly mean the water becomes more acidic Ionic product of water ChemGuide on Kw ionic product for water http://www.chemguide.co.uk/physical/acidbaseeqia/kw.html http://www.chemguide.co.uk/physical/acidbaseeqia/kw.html technically, H3O+ Chem Guide: O produto iônico da água [em inglês]