25. A 2L sample of mineral water was titrated with EDTA to determine its hardness in terms of ppm CaCO3. The EDTA solution was titrated using 255 mg of primary standard CaCO3 requiring 31.85 mL for titration to the Calmagite endpoint. A 50 mL aliquot was titrated with 34.34 mL EDTA. Determine the hardness of the sample. a. - COOH b. - SO3H c. - NO2 d. - NHCO 26. A 6.881 g sample containing magnesium chloride (95.21) and sodium chloride (58.45) was dissolved in sufficient water to give 500 mL of solution. Analysis for the chloride content of a 50.0 mL aliquot resulted in the formation of 1.2501 gram AgCl (143.32). The magnesium in a second 25 mL aliquot was precipitated as MgNH PO; on ignition, 0.1269 gram of Mg2P2O7 (222.57) was found. Calculate the percentage of non-chloride component in the sample. a. 33.1% b. 33.3% c. 33.5% d. 33.7%
25. A 2L sample of mineral water was titrated with EDTA to determine its hardness in terms of ppm CaCO3. The EDTA solution was titrated using 255 mg of primary standard CaCO3 requiring 31.85 mL for titration to the Calmagite endpoint. A 50 mL aliquot was titrated with 34.34 mL EDTA. Determine the hardness of the sample. a. - COOH b. - SO3H c. - NO2 d. - NHCO 26. A 6.881 g sample containing magnesium chloride (95.21) and sodium chloride (58.45) was dissolved in sufficient water to give 500 mL of solution. Analysis for the chloride content of a 50.0 mL aliquot resulted in the formation of 1.2501 gram AgCl (143.32). The magnesium in a second 25 mL aliquot was precipitated as MgNH PO; on ignition, 0.1269 gram of Mg2P2O7 (222.57) was found. Calculate the percentage of non-chloride component in the sample. a. 33.1% b. 33.3% c. 33.5% d. 33.7%
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions
Section4.9: Spectrophotometry
Problem 3.1ACP
Related questions
Question
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 3 images
Recommended textbooks for you
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781337399074
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781337399074
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning