how do i calculate molarity of a solution
To calculate molarity. 1  Find the number of moles of solute dissolved in solution. 2  Find the volume of solution in liters. 3  Divide moles solute by liters solution.ample Molarity Calculation. Take the following example: Calculate the molarity of a solution prepared by dissolving 23.7 grams of KMnO 4 into enough water to make 750 mL of solution. This example has neither moles or liters needed to find molarity. Find the number of moles of the solute first.