Question

Question #06d2c

Answer 1

`2.0378` times

Explanation:

We can find this using Graham's Law of Effusion or Diffusion.

It says :- The rate of effusion of a gas is inversely proportional to the square root of the molar mass,

That is `r prop 1/sqrt(M)` where, `r` is the rate of effusion of the gas (volume or number of moles per unit time.) and `M` is the molar mass of the gas.

From that, we can conclude that,

`R_1/R_2 = sqrt((M_2)/(M_1))`

Where Respective `R`'s are the rate of effusion of the gas and the respective `M`'s are the molar masses of the gas.

So, According to this relation, If we take Krypton as Gas 1 and Neon as Gas 2,

`R_1/R_2 = sqrt(20.18/83.8) = 0.4907` (approx.)

So, As Krypton is Gas 1, and the ratio of `R`'s is less than `1`,

So, Neon will effuse faster and it will effuse approximately `1/0.4907 = 2.0378` times faster than Neon.

Hope this helps.