Does Kw = [H3O+][OH-] = 1.0 x 10-14 only apply pure water?

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Does Kw = [H3O+][OH-] = 1.0 x 10-14 only apply pure water?

Postby Chem_Mod » Sun Aug 21, 2011 12:08 pm

Does the equation Kw = [H3O+][OH-] = 1.0 x 10-14 only apply to pure water?

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Re: Does Kw = [H3O+][OH-] = 1.0 x 10-14 only apply pure wat

Postby Chem_Mod » Sun Aug 21, 2011 12:08 pm

No, it is applicable to situations in which water is the solvent. Kw is always constant for a given temperature, and that is why we can calculate pH upon addition of acid or base in the first place.


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