Question

Which list ranks the gasses in the correct order from the

Slowest to the fastest rate of effusion?

Answer 1

It isn't C, it's D

Step-by-step explanation:

chlorine, oxygen, nitrogen, hydrogen is the order of slowest to fastest.

Answer 2

D. chlorine, oxygen, nitrogen, hydrogen.

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.

ν ∝ 1/√M

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

• The molecular mass for the listed gases are:

O₂: 32.0 g/mol,

Cl₂: 70.906 g/mol,

N₂: 28.0 g/mol,

H₂: 2.0 g/mol.

• Hence, the smallest molecular mass of the gas, the fastest rate of effusion.

So, the order from the slowest to the fastest rate of effusion is:

Chlorine, oxygen, nitrogen, hydrogen.