Question

The work done during the free expansion of one mole of an ideal gas at $27^{\circ}C$ to twice its original volume is (given : $RT=2494 \,J \,mol^{-1}$, In $2 = 0.7, log\, 2 = 0.3)$

• A. $1746 \,J\, mol^{-1}$
• B. $-1746 \,J\, mol^{-1}$
• C. $zero$
• D. $748.2 \,J\,mol^{-1}$

Answer 1

Answer: (C)

The work done during reversible process is given by $\int Pdv$ Since, here no work is done against external pressure (as expansion is free), the work done is zero