The density of a NaNO₃ solution is 1.24 g/mL. What is the molarity of a 25.0% (m/m) NaNO₃ solution?

Question

Quizplus · Accepted Answer

To find the molarity, first calculate the mass of NaNO3 in 100 g of solution (25 g), then find the volume of the solution using its density (100 g / 1.24 g/mL = 80.65 mL = 0.08065 L). Molarity = moles of solute / liters of solution. Moles of NaNO3 = 25 g / 85 g/mol = 0.294 mol. Molarity = 0.294 mol / 0.08065 L = 3.65 M.

The Density of a NaNO3 Solution Is 1

The Density of a NaNO₃ Solution Is 1