The apparent molar volume of ammonium bromide and ammonium nitrate has been determined in various solutions of ammonium chloride at 30°C from density measurements using an hydrostatic balance. The molar volumes show a linear function of concentration. The values of NH4Br, NH4NO3 are larger in NH4Cl solutions than in pure water and this has been attributed to the increase in the interactions of NH4Br and NH4NO3 with NH4Cl. The mean apparent molar volume of NH4Br−NH4Cl and NH4NO3−NH4Cl solutions have also been estimated directly from density measurements as well as from pure water data using Young's rule. The deviations are approximately studied as excess volume of mixing of NH4Br and NH4NO3 with NH4Cl.
Volume 134, 2022
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