Procaine hydrochloride (м = 272.77 g/mol) is used as a local anesthetic. Calculate the molarity of a 4.666 m solution which has a density of 1.1066 g/mL.
A) 2.272 M
B) 4.056 M
C) 4.216 M
D) 4.666 M
E) None of these choices is correct.

Question

Quizplus · Accepted Answer

The correct answer is A because the molarity of the solution is 2.272 M. This can be calculated using the formula:Molarity = (Mass of solute / Molar mass of solute) / Volume of solutionIn this case, the mass of solute is 4.666 g, the molar mass of solute is 272.77 g/mol, and the volume of solution is 1000 mL. Plugging these values into the formula, we get:Molarity = (4.666 g / 272.77 g/mol) / 1000 mL = 2.272 M

Procaine Hydrochloride (м = 272