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Friday, May 15, 2015

Molarity of a Solution Problems, 2

Category: Chemical Engineering Math

"Published in Newark, California, USA"

Calculate the molar concentration of a solution that is 30% wt. NH4NO3 and has a specific gravity of 1.1252.

Solution:

The concentration of a given solution by percent of weight can be written as follows



Since the specific gravity of a solution which is also the density of a solution is given in the problem, then we can express the concentration of a solution in grams of NH4NO3 per liter of solution as follows



The molarity of a solution is defined as moles of solute per liter of solution. Therefore, the molarity of NH4NO3 solution is