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A large cylinder of helium filled at 200...

A large cylinder of helium filled at `200 mm` of`Hg` has small orifice through which helium escaped into evacuated space at the rate of `6.4 mol es//hour`. How long would it take for `10 mol es` of `CO` to leak through a similar orifice if the `CO` was confined at the same pressure?

A

`2.1 "hour"`

B

`4.2 "hour"`

C

`5.6 "hour"`

D

`11.2 "hour"`

Text Solution

Verified by Experts

The correct Answer is:
B
`(r_(He))/(r_(CO))=sqrt((M_(CO))/(M_(He)))=sqrt((28)/(4))=2.65`
`r_(CO)=(r_(He))/(2.65)=(6.4)/(2.65)= 2.4 mol//hr`
`t=(10)/(2.4) ~~4.2h`
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