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Answer to Question #257202 in Inorganic Chemistry for Tahir

Question #257202
  1. In some water softening operations, Mg2+ must be removed from solution along with Ca2+. What pH is required to lower TOT Mg to 10 mg/L as CaC03 by precipitation of Mg(OH)2(s)?
  2. What is the solubility of ferrihydrite (amorphous Fe(OH)3(s)) in an ideal pH 7.0 solution containing 10-2 M TOTS04? Give your answer in ug/L TOTFe.
  3. A groundwater at pH 7.5 is in equilibrium with PC02 = 10-1•5 atm and with siderite (FeC03(s)). Determine the total dissolved Fe concentration.
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2021-10-27T06:41:47-0400

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