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Under isothermal condition, a gas at 300...

Under isothermal condition, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is : [Given that 1 L bar = 100 J]

A

`- 30J`

B

`5kJ`

C

`25J`

D

`30J`

Text Solution

Verified by Experts

The correct Answer is:
A
`:. W_(m)= -P_(m) DeltaV`
`= -2 "bar" xx (0.25- 0.1)L`
`= - .30 "Lbar"`
`=- 0.3 xx 100 Jimplies -30 J`
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