IIT JEE , AIEEE Forum - Chemistry , Physical Chemistry

kmmankad

I think this question means:
there is a flask maintained @ 298K.
Gas A is introduced into it....P=1
Gas A is removed
Gas B is introduced into it....p=0.5
....Quest:Ratio of molecular wts.......

................I have solved it according to my understanding......
......i have the ans of 2:3............

PV=(w/M)RT
V=Volume of Flask
For Gas A,
1xV= (2/M1)x R x 298 -----------------------------1

For Gas B,
1/2 x V=(3/M2)x R x 298 --------------------------------2

From 1,2
On Dividing,
M1:M2::2:3

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