What is the molarity of phosphoric acid in a 22.1% (by mass)aqueous solution?
A)0.0522 m
B)0.0248 m
C)0.0992 m
D)0.0496 m
E)The density of the solution is needed to solve the problem.

Question

Quizplus · Accepted Answer

To calculate molarity, the mass of the solute and the volume of the solution are needed. The percentage by mass only gives the ratio of the mass of phosphoric acid to the total mass of the solution. Without the density of the solution, it's impossible to convert mass percent to volume, which is necessary to calculate molarity.

What Is the Molarity of Phosphoric Acid in a 22