What is the concentration of sodium ions in a 0.300 M Na2SO4 solution?

• A. 0.300 M
• B. 0.600 M
• C. 0.150 M
• D. 0.900 M

Answer: (B)

Verified step by step guidance

1. Identify the chemical formula of the compound: sodium sulfate is Na\_2SO\_4, which means each formula unit contains 2 sodium ions (Na\^+).
2. Understand that the concentration of the solution (0.300 M) refers to the concentration of Na\_2SO\_4 formula units dissolved in the solution.
3. Since each formula unit produces 2 sodium ions, multiply the molarity of Na\_2SO\_4 by 2 to find the concentration of sodium ions.
4. Write the expression for sodium ion concentration: \(\text{[Na\^+]} = 2 \times 0.300\,M\).
5. Calculate the product to find the sodium ion concentration (do not compute the final value here, just set up the calculation).