The Diffusion of Iodine in Carbon Tetrachloride under Pressure

The diffusion of iodine in carbon tetrachloride was studied over a temperature range from 10 to 55°C and a pressure range from 1 to 200 atmospheres by the capillary cell technique and by an optical comparison method. The results of the two methods agree well, and the data can be represented by an activation energy at constant pressure of 3300 cal/mole compared to an activation energy at constant volume of 1070 cal/mole.