Question

why we don't take h+ concentration of water while calculating ph of weak acid​

Answer 1

Since water dissociates to form H+ and OH-, it affects the pH of the solution. Usually we ignore this effect because water is only very weakly acidic and basic, allowing us to assume that its contribution to the pH of the solution is negligible compared to that of other acids or bases present.

Answer 2

Since water dissociates to form H+ and OH-, it affects the pH of the solution. Usually we ignore this effect because water is only very weakly acidic and basic, allowing us to assume that its contribution to the pH of the solution is negligible compared to that of other acids or bases present.

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