Question

A solution contains 225 g of sodium chloride, NaCl, dissolved in enough water to make a 0.25 L of solution. What is the molarity of the solution?
A. 3.88 M, B. 1.03 M, C. 1.5 M, D. 15.5 M

Answer 1

Answer: The correct answer is option D.

Explanation:

Mass of the NaCl = 225 g

Volume of the solution ,V = 0.25 L

$Molarity=\frac{\text{Mass of the NaCl}}{\text{Molar mass of the NaCl}\times V(L)}=\frac{225 g}{58.44 g/mol\times 0.25 L}=15.4004 mol/L$

15.4004 mol/L is the molarity of the solution. The most closest option to our answer is option D.