Question

Which of the following gases diffuses the fastest? O 2 , CH 4 , CO 2 , Cl 2 O 2 CH 4 CO 2 Cl 2

Answer 1

CH4 is the answer.

Hope this helps <3

Answer 2

Methane (CH₄).

Step-by-step explanation:

Thomas Graham found that, at a constant temperature and pressure the rates of effusion of various gases are inversely proportional to the square root of their masses.

∨ ∝ 1/√M

where ν is the rate of effusion and M is the atomic or molecular weight of the gas particles.

The lighter gases move more quickly than heavier ones at the same temperature.

• Molecular mass of (O₂) = 32 g/mol;

• Molecular mass of (CH₄) = 16 g/mol;

• Molecular mass of (CO₂) = 44 g/mol;

• Molecular mass of (Cl₂) = 71 g/mol.

So, Methane has smallest molecular mass and diffuses the fastest.