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How is Kw valid?

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14y ago

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Kw is the ionisation constant for water at 25°C which value is 1.0x10^-14. (chemistry)

In water at any pH the equilibrium state Kw is defined by and equal to the 'ion product':

Kw = [H3O+]*[OH-] = 1.0*10-14at room temperature 25°C
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