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Topic: Propagation of Error from EDTA titration  (Read 4291 times)

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Offline MrHappy0

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Propagation of Error from EDTA titration
« on: October 24, 2011, 08:57:13 PM »
Hey everyone,

I performed an experiment where I attempted to determine the concentration of Calcium Oxide in a sample. The Sample was dissolved in HCl and deionized water. It was titrated with EDTA and murexide was used as an indicator. The lab instructor asked us to determine the standard deviation (propagated). The Molarity and the standard deviation of the molarity was given. We then performed the typical stoichiometric calculations to find the concentration of CaO. I know the formulas to find the propagation of error but not really sure how or which one relates to this problem. Does anyone have any ideas?
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Offline MrHappy0

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Re: Propagation of Error from EDTA titration
« Reply #1 on: October 24, 2011, 09:47:35 PM »
My guess is that the propagation of error would be the ..      square root((stdev of M^2)/M) .. M being molarity of the EDTA. Is this correct?
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