An aqueous solution contains 144.0 g of NaCl per liter. What is the molarity of the solution?
A) 2.879 M
B) 2.464 M
C) 0.1682 M
D) 0.1440 M
E) 2.154 M

Question

Quizplus · Accepted Answer

Molarity is defined as the number of moles of solute per liter of solution. To find the molarity of the solution, we need to first calculate the number of moles of NaCl present in one liter of solution.

Molar mass of NaCl = 22.99 g/mol + 35.45 g/mol = 58.44 g/mol
Number of moles of NaCl in 1 liter of solution = 144.0 g / 58.44 g/mol = 2.464 mol

Thus, the molarity of the solution is:

Molarity = Number of moles of solute / Volume of solution in liters
Molarity = 2.464 mol / 1 L
Molarity = 2.464 M

Therefore, the best choice is B.

An Aqueous Solution Contains 144