If 750. mL of a certain solution contains 50.0 g Na₂SO₄, the sodium ion concentration, [Na⁺], is

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Quizplus · Accepted Answer

To find the sodium ion concentration, first calculate the molarity of Na2SO4. The molar mass of Na2SO4 is approximately 142.04 g/mol. Thus, 50.0 g of Na2SO4 is 50.0 g / 142.04 g/mol = 0.352 mol. The molarity of Na2SO4 is 0.352 mol / 0.750 L = 0.469 M. Since each Na2SO4 produces 2 Na+ ions, the concentration of Na+ is 2 * 0.469 M = 0.938 M, which rounds to 0.939 M.

If 750 ML of a Certain Solution Contains 50