Molarity calculator using percentage purity and density of acids and bases

(Last Updated On: August 9, 2020)

This is a simple online molarity calculator from % purity and density of the concentrated acids and bases. I have developed this calculator for the calculations necessary for the preparation of solutions using a concentrated acid or base solutions. Concentrated acids and bases such as sulfuric acid, hydrochloric acid, nitric acid, and ammonium hydroxides are provided with a certain % purity and a specific density. You can find these details on the label of the container.

Using the details; formula weight, percent purity, and density of an acid or base, you can calculate the molarity of the concentrated solution. However, it would be tedious to calculate the initial molarity of the concentrated acids and bases and use that molarity for the dilutions. Therefore, to minimize the time and avoid complex calculations, I developed it. Basically, it uses the molarity formula for the percent purity and density. The relationship of the molarity, formula weight, % purity and density of the concentrated solution is given as $\inline&space;M=\frac{(purity\times&space;density\times10)}{MW}$