Electrical Conductivity of Tungsten-Containing Ammonium Hydroxide Solutions

The electrical conductivity of ammonium hydroxide–tungstate ion solutions is studied in the concentration range 0.01–6 M NH 4 OH and 0.01–0.2 M W (based on metal) as a function of the reagent content in a solution and its temperature. The electrical conductivity of the system is shown to increase linearly as the tungsten content in the solution increases, and an increase in the electrical conductivity with the NH 4 OH concentration is not linear. The electrical conductivity of the system is found to increase linearly as the solution temperature increases, which enables linearization of the obtained dependences and calculation of the temperature coefficients of the electrical conductivity of the solutions in the aforementioned range of the reagent concentrations.