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6. In the combined algorithm for a single determination of the ppm of CaCO, in e

ID: 924074 • Letter: 6

Question

6. In the combined algorithm for a single determination of the ppm of CaCO, in experiment 2 is represented by the following equation: (lo experimcombine (10) 0.5000 g × 0.9987 purity × 0.02500 L x 0,027 34 L x 1000 mg O 0.5000 L × 0.02656 L x 0,050001-x1 g _ ppm Caco, = 0.5000 g Where: 1000 mg/1 g is the conversion factor for ppm 0.5000 g is the weight of CaCO, in the primary standard 0.9987 is the purity of the CaCO, 0.02500 L is the pipette volume of the standard CaCO, solution 0.02734 L is the buret volume of the EDTA 0.5000 L is the volumetric volume of the of the original primary standard CaCO, solution 0.02656 L is the buret volume of EDTA used to titrate the 0.02500 L sample of the standard CaCO, solution 0.05000 L. is the pipette volume of the unknown CaCO, solution Caco, associated with a single or and relative able uncertainties for burets, volumetric flasks and pipette Determine the absolute error and relative error in ppm aCO, associated with a single standardization and titration of an unknown on and titration of an unknown CaCO, solution. You may assume comparable uncertainties for burets, veol volumes. This is an approximately true.

Explanation / Answer

6. In the combined algorithm for a single determination of the ppm of CaCO, in e

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