Diffusivities and Solubilities of NH₃ Gas in Aqueous Solutions of Ammonium Salts

Abstract

Diffusivities and solubilities of NH₃ gas in aqueous solutions of ammonia salts (NH₄Cl, NH₄NO₃, (NH₄)₂SO₄) have been measured in the range of salt concentration up to 3 mol/l and at temperatures of 20 to 60°C.
The diffusivity and solubility of NH₃ gas in (NH₄)₂SO₄ solution decrease with increasing salt concentration, while the diffusivities and solubilities of NH₃ gas in NH₄Cl and NH₄NO₃ solutions are nearly independent of salt concentration.
Experimental equations for diffusivity and solubility are obtained as a function of salt concentration and temperature, respectively.