1.

Equal moles of hydrogen and oxygen gases are placed in a container with a pin - hole through which both can escape. What fraction of the oxygen escapes in the time required for one - half of the hydrogen to escape ?

Answer»

`(1)/(4)`
`(3)/(8)`
`(1)/(2)`
`(1)/(8)`

SOLUTION :`(tO_(2))/(tH_(2))=sqrt((MH_(2))/(MO_(2)))`
`(tO_(2))/(0.5)=sqrt((2)/(32))`
`tO_(2)=(1)/(8)`


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