Question #06d2c

1 Answer
Jan 31, 2018

#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.