A chemist prepares an aqueous solution of sodium chloride.The solution contains 50.0 g of NaCl and has a volume of 450 mL.What is the molarity of this solution?

Question

Quizplus · Accepted Answer

To find the molarity of the solution, we need to use the formula:

Molarity = moles of solute / volume of solution in liters

First, we need to convert the mass of NaCl to moles:

moles of NaCl = mass / molar mass = 50.0 g / 58.44 g/mol = 0.855 moles

Next, we need to convert the volume of the solution to liters:

volume of solution = 450 mL / 1000 mL/L = 0.450 L

Now, we can plug in the values into the formula:

Molarity = 0.855 moles / 0.450 L = 1.90 M

Therefore, the answer is B.

A Chemist Prepares an Aqueous Solution of Sodium Chloride