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Concentrations of solutions in chemistry are usually expressed as molarity, which is the number of moles of solute per liter of solution. To find the molarity of a solution requires knowing the mass of dissolved solute the volume of the solution and molar mass of the solute. Molarity is defined as the number of moles of solute dissolved in 1 liter of solution.. Molarity Formula is given below. Thus molarity has the units moles per liter (mol L-1).
Osmotic concentration, formerly known as osmolarity, is the measure of solute concentration, defined as the number of osmoles of solute per litre of solution. The osmolarity of a solution is usually expressed as Osm/L, in the same way that the molarity of a solution is expressed as M. Whereas molarity measures the number of moles of solute per unit volume of solution, osmolarity measures the number of osmoles of solute particles per unit volume of solution. This value allows the measurement of