What is the molarity of chloride ions when 10.4 grams of MgCl₂ is dissolved in 753 mL of water? A)0.00 M B)0.145 M C)0.000290 M D)0.290 M3

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Quizplus · Accepted Answer

The molar mass of MgCl2 is approximately 95.21 g/mol. Dissolving 10.4 g of MgCl2 gives 0.109 mol of MgCl2. Since each MgCl2 produces 2 moles of Cl- ions, the moles of Cl- ions are 0.218. The molarity is moles of solute per liter of solution, so 0.218 mol / 0.753 L = 0.290 M.

What Is the Molarity of Chloride Ions When 10