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Posted by on Friday, April 25, 2008 at 9:49pm.

Does molality or molarity vary with temperature, or are they both temperature independent?

  • Chem - , Friday, April 25, 2008 at 10:00pm

    Molarity = # mols/L. # mols = grams/molar mass. The mass of a solute doesn't change with temperature. But volume will; therefore, molarity will change as the density of solvent changes with temperature.
    Molality = # mols/kg solvent. In light of the preceding paragraph, do you think molality will change with termperature?

  • Chem - , Tuesday, March 15, 2016 at 8:33am

    no because it is the ratio of no of moles of solute and mass of solvent in kg so mass remain constant at any termperature and molality will not change with termperature.

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