Answer:
The ratio of the rates is equivalent to the square root of the ratio of the molar masses.
Molar mass of chlorine: 71
Molar mass of ethane: 30
V(Cl) / V(C₂H₆) = √(30 / 71)
V(Cl) / V(C₂H₆) = 0.65
The relative rate of diffusion of chlorine to ethane is 0.65
