MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and ThermochemistryReversible and Irreversible Work
Calculate the work done when 1 mole of an ideal gas is compressed reversibly form 1 bar to 4 bar at a constant temperature of 300 K.
A.3.457 kJ✓ Correct
B.–8.02 kJ
C.18.02 kJ
D.None of these
Explanation
n = 1 mole P₁ = 1 bar P₂ = 4 bar T = 300 K It is a reversible & isothermal process. ∴ work done = –nRT In 1 2 P P = –1 × 8.314 × 300 × In 1 4 = 3457.69J = 3.457 KJ As the ideal gas is compressed, w > 0 ∴ work done = +3.457KJ Enthalpy and Heat Capacity of A System
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