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why do titrations use 25ml?

andieje
andieje asked
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Last Modified: 2012-06-27
Hi

Is there a specific reason why high school /college titrations are designed such that you normally use a 25ml aliquot of the analyte? In everyone I've ever done its always 25ml. I've got to design some experiments and give reasons for my choice of volumes/concentrations of solutions.

Another thing I noticed is you often use 0.1M or less of base or acid. I presume you don't use a stronger acid as even one drop of this will cause big pH changes. I can do the calculations for that to work it out. I'm going to assume there is 0.05ml in one drop of solution from a burette. Does anyone know if that seems about right? I don't have access to a burette right now :)

Thanks
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