I thought the neutral pH is when [H+] and [OH-] were the same, which is at pH=pOH=7.
Is that not always the case?
neutral pH not 7?
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Re: neutral pH not 7?
pH 7 is neutral at STP but not for all temperatures as Kw is temperature dependent.
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Re: neutral pH not 7?
Using the vant hoff equation can help you see how temperature affects K. From there you can determine if a certain pH is neutral.
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Re: neutral pH not 7?
pH is not neutral at 7 if the conditions are not standard. A pH of 7 may be acidic or basic depending upon the pH at nonstandard conditions.
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Re: neutral pH not 7?
Kw is temperature dependent and therefore the concentration of [h30+] and [oh-], calculated by the square root of Kw, will be different.
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