1.

50 ml of hydrogen diffuses out through a small hole from a vessel in 20 minutes. The time needed for 40 ml of oxygento diffuse out is

Answer»

12 min
64 min
8 min
32 min

Solution :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


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