Osmolarity is a measure of the concentration of the individual solute particles dissolved in a fluid.

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Osmolarity is defined as the number of osmoles of solute per liter of solution, where an osmole is one mole of solute particles (ions or molecules) that contribute to the osmotic pressure of the solution. Therefore, osmolarity takes into account the total number of solute particles and their effect on the flow of water across a semipermeable membrane.

Osmolarity Is a Measure of the Concentration of the Individual