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Unformatted text preview: Unknown Number : ___46____ Trial 1 Trial 2 Trial 3 Molarity of HCl (mol/L) 0.0741 0.0745 N/ A Average Molarity (moles/L) __.0743__ +/- __.0002__ Conclusion The purpose of the experiment was achieved by determining the average molarity of an unknown solution of HCl using a titration with NaOH and phenolphthalein. The unknown number 46 had an average molarity of .0743 moles/L with a standard deviation of + or - .0002. Possible sources of error would be to add to much NaOH to the HCl solution or not enough phenolphthalein, therefore disturbing the results of the experiment. No data was discarded but a third trial was not performed because it was not necessary....
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- Fall '08