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2 mol of an ideal gas at 27^(@)C expand ...

2 mol of an ideal gas at `27^(@)`C expand isothermally and reversibly from a volume of 4L to 40L. The work done (in KJ) by the gas is :-

A

`w=-28.72KJ`

B

`w=-11.488KJ`

C

`w=-5.736KJ`

D

`w=-4.988KJ`

Text Solution

Verified by Experts

The correct Answer is:
B
`w=-2.303nRTlog(V_(2))/(V_(1))`
`=-(2.303xx2xx8.314xx300log(40)/(4))/(1000)KJ`
`w=-11.224KJ`
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