Standard CaCO3 is used to standardize the EDTA solution prior to titration. Suppose 0.385 g of CaCO, was dissolved and diluted to 250.0 mL. A 25.0 mL aliquot of this standard CaCO3 solution was then titrated to endpoint using 29.50 mL of the EDTA solution. Afterwards, the standardized EDTA solution was used to analyze the hardness of a 1000-ml water sample buffered at pH 10. The sample required 44.35 mL of the EDTA solution to reach the endpoint. Determine the hardness of the sample in ppm CaCO3.

Standard CaCO3 is used to standardize the EDTA solution prior to titration. Suppose 0.385 g of CaCO, was dissolved and diluted to 250.0 mL. A 25.0 mL aliquot of this standard CaCO3 solution was then titrated to endpoint using 29.50 mL of the EDTA solution. Afterwards, the standardized EDTA solution was used to analyze the hardness of a 1000-ml water sample buffered at pH 10. The sample required 44.35 mL of the EDTA solution to reach the endpoint. Determine the hardness of the sample in ppm CaCO3.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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