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Topic: Third endpoint of titrating phosphoric acid  (Read 2295 times)

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Offline wheresthebic

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Third endpoint of titrating phosphoric acid
« on: July 10, 2012, 08:08:56 PM »
Why is the third endpoint of phosphoric acid, when titrated with sodium hydroxide not measurable?
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Offline Hunter2

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Re: Third endpoint of titrating phosphoric acid
« Reply #1 on: July 11, 2012, 03:30:37 AM »
In which pH range you will find this end point?  Or in other words which pH has a solution of Trisodium phosphate? pkB point also gives a hint.
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