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Molality vs Osmolality - What's the difference?

molality | osmolality |

In chemistry terms the difference between molality and osmolality

is that molality is the concentration of a substance in solution, expressed as the number of moles of solute per kilogram of solvent while osmolality is the molality of an ideal solution that would exert the same osmotic pressure as the solution being considered.

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

    osmolality

    English

    Noun

    (osmolalities)
  • (chemistry) The molality of an ideal solution that would exert the same osmotic pressure as the solution being considered

    • See also

    * osmolarity