Electrical Conductance, Density, and Viscosity Measurements of Aqueous Solutions of Hydroxylamine Hydrochloride at 25c

摘要

The investigation determined the electrical conductance, density and viscosity of aqueous solutions of hydroxylamine hydrochloride at 25C. A comparison of the experimental results with those obtained by using a theoretical equation developed by Onsager was made. The elec trical conductance measurements were obtained by the use of a Leeds-Northrup Wheatstone Bridge and a Jones Conductance Cell in a constant-temperature bath. CannonFenske-Oswald viscometers in the constant-temperature bath were used to obtain the kinematic viscosities. An approximately 25 ml calibrated pycnometer was used to measure densities. The electrical conductance measurements for NH2OH.HC1 indicated that equivalent conductance = 153.15 and the slope of the equivalent conductance vs. (C) 1/2 curve in the dilute range (slope = 260.5) was approximately equal to the calculated theoretical value for a 3-1 electrolyte. The density varied linearly with concentration from 0.99707 gm/ml for pure water to 1.0921 gm/ml for a 3.507 molar solution of NH2OH.HC1. The viscosity varied as an approximately straight line with concentration. Corrected values of viscosity ranged from 0.8963 centistokes for pure water to 1.050 centistokes for the 3.507 molar solution.