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 $\text{H}^1_2\text{O}^{18}$ 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.