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A gas in an open container is heated fro...

A gas in an open container is heated from `27^(@)C" to "127^(@)C.` The fraction of the original amount at gas remaining in the container will be

A

`(3)/(4)`

B

`(1)/(4)`

C

`(1)/(2)`

D

`(1)/(8)`

Text Solution

Verified by Experts

The correct Answer is:
1
On heating a gas in a open container (P and V constant )
moles of gas go out
Thus `n_(1)T_(1)=n_(2)T_(2)`
or`" "n_(1)xx300=n_(2)xx400`
`n_(2)=(3n_(1))/(4)`
`:. " "` Fraction of moles & gas left `=(n_(2))/(n_(1))=(3n_(2))/(4n_(1))=(3)/(4)`
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