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Molality vs Osmolarity - What's the difference?

molality | osmolarity |

In chemistry terms the difference between molality and osmolarity

is that molality is the concentration of a substance in solution, expressed as the number of moles of solute per kilogram of solvent while osmolarity is the osmotic concentration of a solution, normally expressed as osmoles of solute per litre of solution.

molality

English

Noun

(molalities)
  • (chemistry) the concentration of a substance in solution, expressed as the number of moles of solute per kilogram of solvent

    • Synonyms

    * molal concentration

    See also

    * molarity * normality

    osmolarity

    English

    Noun

    (osmolarities)
  • (chemistry) The osmotic concentration of a solution, normally expressed as osmoles of solute per litre of solution.

    • Related terms

    * osmolality