Chapter 8, Problem 84E

Heavy water, ${\text{D}}_2\text{O}$ (molar mass = 20.03 g mol-1). can be separated from ordinary water, ${\text{H}}_2\text{O}$ (molar mass = 18.01), as a result of the difference in the relative rates of diffusion of the molecules in the gas phase. Calculate the relative rates of diffusion of ${\text{H}}_2\text{O}$ and ${\text{D}}_2\text{O}$.