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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.

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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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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.
Transcribed Image Text: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.
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