In
chemistry, the osmole (Osm) is a non-
SI unit of measurement that defines the number of
moles of a
chemical compound that contribute to a
solution's
osmotic pressure. Osmolarity is a measure of the osmoles of solute per
liter of solution, while the osmolality is a measure of the osmoles of solute per
kilogram of
solvent. Molarity and Osmolarity are not commonly used in osmometry because they are temperature dependent; that is, water changes its volume with temperature. However, if the
concentration is very low, osmolarity and osmolality are considered equivalent. In calculations for these two measurements,
salts are presumed to dissociate into their component
ions. For example, a mole of
glucose in solution is one osmole, whereas a mole of
sodium chloride in solution is two osmoles (one mole of
sodium and one mole of
chloride). Both sodium and chloride ions affect the osmotic pressure of the solution.
See more at Wikipedia.org...
The concentration of particles dissolved in a fluid. The osmolality of serum can help diagnose several medical conditions such as dehydration, diabetes, and shock.
Free Download Now!
