Water softeners remove metal ions such as Ca21 and Fe31 by replacing them with enough
Chapter 4, Problem 4.35(choose chapter or problem)
Water softeners remove metal ions such as Ca21 and Fe31 by replacing them with enough Na1 ions to maintain the same number of positive charges in the solution. If 1.03103 L of hard water is 0.015 M Ca21 and 0.0010 M Fe31, how many moles of Na1 are needed to replace these ions?
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