Ion-exchange resins can remove Mg²⁺ and Ca²⁺0 in water (called softening) by releasing Na⁺. What would be the concentration of sodium ion in the softened water if the combined concentration of these Group 2A ions that were removed from the hard water was 0.026 M ? A)0.052 M B)0.26 M C)0.13 M D)0.00 M E)can't tell, necessary information is lacking

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Quizplus · Accepted Answer

Ion-exchange resins replace each divalent ion (Mg²⁺ or Ca²⁺) with two Na⁺ ions. Therefore, if the concentration of Mg²⁺ and Ca²⁺ ions removed is 0.026 M, the concentration of Na⁺ ions released will be 2 x 0.026 M = 0.052 M.

Ion-Exchange Resins Can Remove Mg2+ and Ca2+0 in Water (Called

Ion-Exchange Resins Can Remove Mg²⁺ and Ca²⁺0 in Water (Called