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Topic: pH and titration clarification  (Read 3270 times)

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Offline hamil

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pH and titration clarification
« on: October 12, 2009, 09:26:27 AM »
Lets say I have an acid that when mixed with water does not disassociate completely. For this situation, the pH would not be what would be calculated from the mol-volume relationship. If I did a titration on the acid mixture, should I expect a correct or erroneous determination of the molarity of the acid mixture. Put another way, would the disassociation of the acid change as the acid approaches neutralization?

Offline Borek

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Re: pH and titration clarification
« Reply #1 on: October 12, 2009, 09:55:54 AM »
Think in terms of LeChatelier's principle. By adding base you remove one of the dissociation products. What effect would you expect?
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Offline hamil

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Re: pH and titration clarification
« Reply #2 on: October 13, 2009, 03:18:54 PM »
I would think that as some of the H was neutralized that more would be produced and that the titration would give the molarity of the acid mixture as if it disassociated completely, yes??

Offline Borek

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Re: pH and titration clarification
« Reply #3 on: October 13, 2009, 05:53:25 PM »
Yes.
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