Question

50 ml of hydrogen diffuses out through a small hole from a vessel in 20 minutes. The time needed for 40 ml of oxygen to diffuse out is
A. 12 min
B. 64 min
C. 8 min
D. 32 min

Answer 1

Correct Answer - B
If 40 ml `O_(2)` will diffuse in t min. then . `r_(O_(2))=(40)/(t)`
`r_(H)=(50)/(20)implies r_(O)=r_(H)sqrt((M_(H_(2)))/(M_(O_(2))))=(50)/(20)sqrt((2)/(32))=(50)/(20).(1)/(4)`
`(40)/(t)=(50)/(80):. t= (40xx 80)/(50)=64` minutes