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

2 mole of an ideal gas at `27^(@)C` expands isothermally and reversibly from a volume of 4 litre to 40 litre. 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 = -nRT "ln" (V_(2))/(V_(1)) = -2 xx 8.314 xx 300 "ln" (40)/(4) = 11.488`
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