Two separate bulbs contain ideal gas `A` and `B`. The density of a gas `A` is twice that of a gas `B`. The molecular mass of `A` is half that of gas `B`. The two gases are at the same temperature. The ratio of the pressure of `A` to that gas `B` is

Options

A. 2
B. `1//2`
C. 4
D. `1//4`

Answer

c

Explanation

(c) `PMw=dRT`
`(P_(A))/(P_(B))=(d_(A))/(d_(B))xx(M_(B))/(M_(A))`
` =(4)/(1)`