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37. What are the ions to be removed from the natural water to make it soft? The introduction of some ions can soften the water? Write the equations of the corresponding reactions. What weight Ca (OH) 2 should be added to 2.5 liters of water to remove its hardness equal to 4.43 mEq / L?
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)
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