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Volumetric and potentiometric titration


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#1 shahul

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Posted 27 December 2010 - 04:20 PM

what is the difference between volumetric tiration and potentiometric titration.
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#2 mississippichem

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Posted 27 December 2010 - 05:26 PM

what is the difference between volumetric tiration and potentiometric titration.


-Volumetric titrations are conducted with understanding of the stoichiometry of that particular reaction. Remember that:

 (moles)=(molarity)(volume)

So if a known volume of a titrant of known concentration is used to titrate a known volume of analyte of unknown concentration. The concentration of analyte can be determined. Endpoints of the titrations are often found with color changing indicators or UV/vis spectroscopy.

-Potentiometric titrations are similar, but the endpoint of the titration is found with potentiometry (measuring of potentials in a chemical redox reaction). This only applies to reactions where something is being oxidized and something is being reduced; meaning electrons are being transferred between distinct chemical species in that reaction.
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You've come a long way. Remember back when we defined what a velocity meant? Now we are talking about an antisymmetric tensor of second rank in four dimensions.

-Feynman Lectures on Physics II





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