Hard water often contains dissolved Ca²+ and Mg2+ ions. One way to soften water is to add phosphates. The phosphate ion forms insoluble precipitates with calcium and magnesium ions, removing them from solution. A solution is 0.055 M in calcium chloride and 0.090 M in magnesium nitrate. Part A What mass of sodium phosphate would you add to 1.0 L of this solution to completely eliminate the hard water ions? Assume complete reaction. Express your answer using two significant figures. |Π| ΑΣΦ 3 m= ? g
Hard water often contains dissolved Ca²+ and Mg2+ ions. One way to soften water is to add phosphates. The phosphate ion forms insoluble precipitates with calcium and magnesium ions, removing them from solution. A solution is 0.055 M in calcium chloride and 0.090 M in magnesium nitrate. Part A What mass of sodium phosphate would you add to 1.0 L of this solution to completely eliminate the hard water ions? Assume complete reaction. Express your answer using two significant figures. |Π| ΑΣΦ 3 m= ? g
Introductory Chemistry: A Foundation
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ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
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Chapter15: Solutions
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Problem 39QAP: 39. Standard solutions of calcium ion used to test for water hardness are prepared by dissolving...
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Step 1: Determine the mass of sodium phosphate used for completely eliminate the hard water ions:
VIEWStep 2: Calculation for moles of calcium chloride and magnesium nitrate :
VIEWStep 3: Calculation for total moles of sodium phosphate:
VIEWStep 4: Calculation for mass of sodium phosphate:
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