MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and ThermochemistryReversible and Irreversible Work

The work done during the expansion of a gas from a volume of 4dm3 to 6 dm3 against a constant external pressure of 3 atm is

A.– 6J

B.– 608 J✓ Correct

C.+ 304 J

D.– 304 J

Explanation

External Pressure, 3 ext P Volume, 3 2 3 1 V 6dm V 4dm Work done is given by the following formula at constant temperature- ext W P V 3 6(6 4) 6L atm W 6 101.32J ( 1Latm=101.32J) W 608J x >> x >> Thus, the correct option is (b)-608 J

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