The diffusion coefficient of an ideal gas is proportional to its mean free path and mean speed. The absolute temperature of an ideal gas is increased 4 times and its pressure is increased 2 times.As a result, the diffusion coefficient of this gas increases `x` times. The value of `x` is........

Answer

4

Explanation

D.C `prop lambda = (kT)/(sqrt(2) pi sigma^(2)P)`
Also D.C. `prop` Av. Speed `= sqrt((8RT)/(pi M))`
`therefore D.C. prop (T^(3//2))/(P)`.