Viscosities of Solutions of Potassium in Liquid Ammonia and Deuteroammonia

The viscosities of solutions of potassium in liquid ammonia and deuteroammonia have been measured with an Ostwald viscosimeter at − 33.6, 0.0, and + 20.0°C over a concentration range from zero to approximately 1.5 mole liter−1. The methods of measurement and the experimental results are given. The viscosities η of the pure liquids, measured in centipoise, are least-squares fitted by the relations logeη = −4.677 +1.577/RT for ammonia and logeη=−4.676+1.670/RT for deuteroammonia, in which R is the gas constant and T is the Kelvin temperature. (The standard deviations are given in parentheses.) The viscosities of the solutions have been discussed previously.