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Three moles of CO(2) gas expands isother...

Three moles of `CO_(2)` gas expands isothermally (in thermal contact with the surroundings, temperature `= 15.0^(@)C`) against a fixed external pressure of `1.00` bar. The initial and final volumes of the gas are `10.0 L` and `30.0L`, respectively. ltbr. Change in entropy of the universe is

A

`34.34 J K^(-1)`

B

`-34.34 J K^(-1)`

C

`20.46 J K^(-1)`

D

`-20.46 J K^(-1)`

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Knowledge Check

  • 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
    25 J
    B
    30 J
    C
    -30 J
    D
    5 kJ.

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