What is the molar concentration of sodium ions in a 0.3 M sodium phosphate (Na₃PO₄, 164 g/mol) solution? Sodium phosphate is used as a cleaning agent, food additive, and stain remover.

Question

Quizplus · Accepted Answer

Sodium phosphate (Na3PO4) dissociates in water to form three sodium ions (Na+) and one phosphate ion (PO4^3-). Therefore, for every 1 mole of sodium phosphate that dissolves, 3 moles of sodium ions are produced. Given a 0.3 M solution of sodium phosphate, the concentration of sodium ions will be 0.3 M * 3 = 0.9 M.

What Is the Molar Concentration of Sodium Ions in a 0.3