1.

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`

Answer» Correct Answer - B
`w=-2.303nRTlog(V_(2))/(V_(1))`
`=-(2.303xx2xx8.314xx300log(40)/(4))/(1000)KJ`
`w=-11.224KJ`


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