Compute for the molar concentration of EDTA standardized using 50.00 mL of the CaCO3 primary standard if it required 25.7 ml of EDTA to reach the endpoint using calgamite as indicator. The primary standard used was prepared as follows: a. 1.6570 g of CaCO3 was transferred to a 500-ml volumetric flask, dissolved in 6 M HCI, and diluted to mark. b. A 50.00-ml aliquot of the resulting solution was transferred to a 250-ml Erlenmeyer flask. c. 5 ml of a pH 10 NH3-NH4Cl buffer was added to the solution before titration. The molar mass of CaCO3 is 100.09. Express your answer in 4 decimal places.

Compute for the molar concentration of EDTA standardized using 50.00 mL of the CaCO3 primary standard if it required 25.7 ml of EDTA to reach the endpoint using calgamite as indicator. The primary standard used was prepared as follows: a. 1.6570 g of CaCO3 was transferred to a 500-ml volumetric flask, dissolved in 6 M HCI, and diluted to mark. b. A 50.00-ml aliquot of the resulting solution was transferred to a 250-ml Erlenmeyer flask. c. 5 ml of a pH 10 NH3-NH4Cl buffer was added to the solution before titration. The molar mass of CaCO3 is 100.09. Express your answer in 4 decimal places.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter17: Complexation And Precipitation Reactions And Titrations

Section: Chapter Questions

Problem 17.19QAP

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