In the acetic acid determination in vinegar experiment; NaOH was standardized with 0.25 g KHP (molar mass = 204 22 g/mol). The KHP was dissolved in 50.0 mL distilled water in a 250 mL Erlenmeyer flask and titrated to the endpoint colour by dispensing 6.50 mL of NAOH from the burette. Calculate the molarity of NaOH. O a 0. 19 M O b. 1.9 X 10+M Oc 0.00016 M Od. 0.25 M O e. 0.019 M Clear my choice

In the acetic acid determination in vinegar experiment; NaOH was standardized with 0.25 g KHP (molar mass = 204 22 g/mol). The KHP was dissolved in 50.0 mL distilled water in a 250 mL Erlenmeyer flask and titrated to the endpoint colour by dispensing 6.50 mL of NAOH from the burette. Calculate the molarity of NaOH. O a 0. 19 M O b. 1.9 X 10+M Oc 0.00016 M Od. 0.25 M O e. 0.019 M Clear my choice

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter16: Applications Of Neutralization Titrations

Section: Chapter Questions

Problem 16.20QAP

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A freshwater sample containing Ca2+ and Mg2+ will be analyzed using EDTA titration. The EDTA titrant was standardized by dissolving 0.5005g of CaCO3 (99.00% purity) in 100.0mL. A 10.00-mL aliquot was then titrated using 24.93 mL of EDTA titrant to the Eriochrome Black T endpoint. A sample with a volume of 250.00 mL is titrated with 20.32 mL of the EDTA titrant in an ammonia buffer at pH 10.00. Another 250.00 mL sample was then treated with NaOH to precipitate Mg(OH)2 and was then titrated at pH 13.00 with 10.43 mL using the same EDTA solution. FW: CaCO3 (100.09 g/mol) & MgCO3 (84.314 g/mol) c. What is the total hardness of the water sample expressed as ppm CaCO3. Total hardness = ____ ppm CaCO3
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A freshwater sample containing Ca2+ and Mg2+ will be analyzed using EDTA titration. The EDTA titrant was standardized by dissolving 0.5005g of CaCO3 (99.00% purity) in 100.0mL. A 10.00-mL aliquot was then titrated using 24.93 mL of EDTA titrant to the Eriochrome Black T endpoint. A sample with a volume of 250.00 mL is titrated with 20.32 mL of the EDTA titrant in an ammonia buffer at pH 10.00. Another 250.00 mL sample was then treated with NaOH to precipitate Mg(OH)2 and was then titrated at pH 13.00 with 10.43 mL using the same EDTA solution. FW: CaCO3 (100.09 g/mol) & MgCO3 (84.314 g/mol) Question: What is the concentration of EDTA titrant in M?