Answer:
Hydrogen effuses 1.4 times faster than Helium.
Explanation:
According to Graham's Law of Effusion, "the rate of effusion of a gas is inversely proportional to the square root of its density or molar mass".
Mathematically,
Rₐ / Rₓ = [tex] \sqrt{Mx/Ma} [/tex] ----- (1)
Where;
Rₐ = Rate of effusion of H₂
Rₓ = Rate of effusion of He
Mₐ = Molar Mass of H₂ = 2 g.mol⁻¹
Mₓ = Molar Mass of He = 4 g.mol⁻¹
Putting values in equation 1,
Rₐ / Rₓ = [tex] \sqrt{4/2} [/tex]
Rₐ / Rₓ = [tex] \sqrt{2} [/tex]
Rₐ / Rₓ = 1.41
Result:
Hence, H₂ effuses 1.41 times faster than He.
