Self-diffusion and Structure of Liquid Water. III. Measurement of the Self-diffusion of Liquid Water with H2, H3 and O18 as Tracers1

Measurements of the diffusion of small amounts of deuterium hydroxide and tritium hydroxide in ordinary water were made at several temperatures. Previous data on the diffusion of H¹₂O^18 in ordinary water have been revised. The results confirm previous conclusions regarding the structure of water and the mechanism of self-diffusion, dipole orientation and viscous flow in water. The effect of the differences in the moments of inertia of various water molecules is discussed.