Question

What is the molar concentration of sodium ions in a 0.350 M Na₃PO₄ solution?

A) 1.05 M
B) 1.40 M
C) 0.350 M
D) 0.117 M

Answer 1

The molar concentration of sodium ions in a 0.350 M Na₃PO₄ solution is 1.05 M.

Step-by-step explanation:

To determine the molar concentration of sodium ions in a solution of Na₃PO₄, we need to examine the chemical formula of Na₃PO₄. In this compound, there are 3 sodium ions (Na⁺) for every 1 molecule of Na₃PO₄.

Therefore, the molar concentration of sodium ions is three times the molar concentration of the Na₃PO₄ solution. The given solution has a molarity of 0.350 M, so the molar concentration of sodium ions is 3 x 0.350 M = 1.050 M.

Therefore, the correct answer is (A) 1.05 M.