Dissociation of H 2 O:H 2 O ↔ H + + OH - K w = a H+ a OH- a H2O Under dilute conditions: a i = [i] And a H2O = 1 Hence: K w = [H + ] [OH - ] At 25 o C.
![Dissociation of H 2 O:H 2 O ↔ H + + OH - K w = a H+ a OH- a H2O Under dilute conditions: a i = [i] And a H2O = 1 Hence: K w = [H + ] [OH - ] At 25 o C.](https://static.fdocuments.in/doc/330x215/56649d835503460f94a69333/dissociation-of-h-2-oh-2-o-h-oh-k-w-a-h-a-oh-a-h2o-under-dilute.jpg)
