Question

How fast does ethane(C2H6)) gas travel compare to chlorine gas

Answer 1

First of all write the molar masses of Gases,

                     Molar Mass of Cl₂  =  71 g/mol

                     Molar Mass of Ethane  =  30 g/mol

According to Graham's Law of Diffusion,

$\frac{Rate of diffusion of Light Gas}{Rate of Diffusion of Heavy Gas}$ = $\sqrt{M.mass of Heavy / M.mass of Light}$

$\frac{Rate of diffusion of Light Gas}{Rate of Diffusion of Heavy Gas}$ = $\sqrt{71 g/mol / 30 g/mol}$

$\frac{Rate of diffusion of Light Gas}{Rate of Diffusion of Heavy Gas}$ = $\sqrt{2.366}$

$\frac{Rate of diffusion of Light Gas}{Rate of Diffusion of Heavy Gas}$ = 1.53

Result:
          So, Ethane gas will diffuse or move 1.53 time faster than Chlorine gas.