Which of the Following Aqueous Solutions Has the Highest Molar

Which of the following aqueous solutions has the highest molar concentration of Na⁺ (aq) ? (Assume each compound is fully dissolved in water.)

A) 3.0M NaCl (sodium chloride)
B) 3.0M NaC₂H₃O₂ (sodium acetate)
C) 1.5M Na₂SO₄ (sodium sulfate)
D) 1.0M Na₃PO₄ (sodium phosphate)
E) All of these solutions have the same concentration of Na⁺ (aq) .

Correct Answer:

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