molality


Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.

mo·lal·i·ty

 (mō-lăl′ĭ-tē)
n. pl. mo·lal·i·ties
Abbr. m The concentration of a solution expressed in moles of solute per kilogram of solvent. Also called molal.

molality

(mɒˈlælɪtɪ)
n, pl -ties
(Chemistry) (not in technical usage) a measure of concentration equal to the number of moles of solute in a thousand grams of solvent

mo•lal•i•ty

(moʊˈlæl ɪ ti)

n., pl. -ties.
the number of moles of solute per kilogram of solvent.
[1920–25]

molality

The concentration of a solute giving the number of moles of solute dissolved in 1 kg of solvent.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.molality - concentration measured by the number of moles of solute per kilogram of solventmolality - concentration measured by the number of moles of solute per kilogram of solvent
concentration - the strength of a solution; number of molecules of a substance in a given volume
References in periodicals archive ?
have calculated Henry's constants for C[O.sub.2]-DES systems under the above-mentioned conditions giving values in the range of (3.7 to 6.1) MPa (on a molality basis) as shown in Figure 7.
The molality of Na (in mol/kg) was calculated from the NaCl content (in wt.% eq) of the aqueous phase in fluid inclusions determined by Raman spectrometry when measured and/or from the microthermometric data, following a charge-balancing method to an estimated chloride concentration [53].
It is confirmed that density of aqueous solutions of sodium saccharin varies linearly with molality of the solutions.
The ranges of concentrations, expressed in moles of each anion per kilogram of [H.sub.2]O (molality), of the calibration and validation set were predetermined to reflect the concentrations expected in samples that would in the future be subjected to the developed speciation method.
Molality of the titrant was determined by direct titration by means of a 0.1 mol/1 sodium thiosulphate solution.
Degree of Ion content (a) Samples saponification (%) (mol/kg) EEA 0 0 EEA-0.26K 26 0.65 EEA-0.31K 31 0.78 EEA-0.43K 43 1.08 EEA-0.58K 58 1.45 EEA-0.62K 62 1.55 (a) Ion content is the molality of potassium acrylate.
where [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] are the molality, activity coefficient, and activity of cadmium ions at equilibrium conditions, respectively.
PhreeqC software was used to determine molality, activity and saturation index of anions and cations of Geno hot spring, the results are given in Table 2.
= 8000), and 0.4 mL of X-100 dispersant were dissolved in 8 mL of nitrate with a molality of 0.1 M.
However, introducing a more recent model with better accuracy Duan and Mao [79] affirms that "all of the published models, including the Duan model [82], are found to posses intolerable deficiencies." Duan and Mao [79] model is capable of predicting the liquid phase density (g/cc) in addition to methane solubility in terms of molality allowing the calculation of the number of moles of methane present per unit volume of liquid.
where, aH+ is the activity of H+ ions, gH is the coefficient of activity of H+ ions, mH is the molality in mol/kg of H+ ions and mdeg is the molality at standard state.
[m.sub.j] is the molality of species j in the liquid phase; [[gamma].sub.j] is the mol fraction of the species j in the solid phase; [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] is the coefficient of the activity of the species j in the solution; [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] is the coefficient of the activity of the species j in the resin.