Autoprotolysis of water

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melissa_dis4K
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Joined: Fri Sep 28, 2018 12:28 am

Autoprotolysis of water

Postby melissa_dis4K » Tue Jan 22, 2019 9:49 pm

How do you know when the autoprotolysis of water doesn't significantly affect the pH? Is this different for different acids and bases or should it always be assumed? Thanks!

Max Hayama 4K
Posts: 63
Joined: Fri Sep 28, 2018 12:16 am

Re: Autoprotolysis of water

Postby Max Hayama 4K » Tue Jan 22, 2019 9:54 pm

If the concentration of OH- or H+ is less than 1e^-7, which are the standard concentration for autoprotolysis of water, then you can assume that the pH of the solution is neutral or at 7. This is because naturally there exists a concentration of either OH- or H+, so any value that is less than 1e^-7 will have no impact on the pH of the solution.


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