Question

`SO_2 and CH_4` are introduced in a vessel in the molar ratio 1:2.The ratio of molecules of two gases present in the container when their rate of effusion becomes equal is :
A. `1:2`
B. `2:1`
C. `4:1`
D. `1:4`

Answer 1

Correct Answer - B
`r=prop p/sqrtM`
`p_1/sqrtM_1=p_2/sqrtM_2`
`p_1/p_2=sqrtM_1/sqrtM_2=n_1/n_2 implies n_(SO_2)/n_(CH_4)=sqrt(M_(SO_2)/M_(CH_4))=sqrt(64/16)=2`