6. Titration of Ca²+ and Mg2+ in a 50.00-mL hard water sample required 23.65 mL of 0.01205 M EDTA. A second 50.00-mL aliquot was made strongly basic with NaOH to precipitate Mg2+ as Mg(OH)2(s). The supernatant liquid was titrated with 14.53 mL of the EDTA solution. Calculate the total hardness of the water sample, expressed as ppm CaCO3.
6. Titration of Ca²+ and Mg2+ in a 50.00-mL hard water sample required 23.65 mL of 0.01205 M EDTA. A second 50.00-mL aliquot was made strongly basic with NaOH to precipitate Mg2+ as Mg(OH)2(s). The supernatant liquid was titrated with 14.53 mL of the EDTA solution. Calculate the total hardness of the water sample, expressed as ppm CaCO3.
Chapter17: Complexation And Precipitation Reactions And Titrations
Section: Chapter Questions
Problem 17.35QAP
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![6. Titration of Ca²+ and Mg2+ in a 50.00-mL hard water sample required 23.65 mL of 0.01205 M EDTA. A
second 50.00-mL aliquot was made strongly basic with NaOH to precipitate Mg2+ as Mg(OH)2(s). The
supernatant liquid was titrated with 14.53 mL of the EDTA solution. Calculate the total hardness of the
water sample, expressed as ppm CaCO3.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F23395684-c640-4867-b49f-9314f31b07b0%2F068db1f7-33d8-4e1e-a42b-cefa50c29978%2Fw2uh95m_processed.jpeg&w=3840&q=75)
Transcribed Image Text:6. Titration of Ca²+ and Mg2+ in a 50.00-mL hard water sample required 23.65 mL of 0.01205 M EDTA. A
second 50.00-mL aliquot was made strongly basic with NaOH to precipitate Mg2+ as Mg(OH)2(s). The
supernatant liquid was titrated with 14.53 mL of the EDTA solution. Calculate the total hardness of the
water sample, expressed as ppm CaCO3.
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